136665 has 12 divisors (see below), whose sum is σ = 236964. Its totient is φ = 72864.

The previous prime is 136657. The next prime is 136691. The reversal of 136665 is 566631.

136665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 84681 + 51984 = 291^2 + 228^2 .

It is not a de Polignac number, because 136665 - 2^{3} = 136657 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1474 + ... + 1563.

It is an arithmetic number, because the mean of its divisors is an integer number (19747).

2^{136665} is an apocalyptic number.

136665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

136665 is a deficient number, since it is larger than the sum of its proper divisors (100299).

136665 is a wasteful number, since it uses less digits than its factorization.

136665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3048 (or 3045 counting only the distinct ones).

The product of its digits is 3240, while the sum is 27.

The square root of 136665 is about 369.6822960327. The cubic root of 136665 is about 51.5093143049.

It can be divided in two parts, 1366 and 65, that added together give a triangular number (1431 = T_{53}).

The spelling of 136665 in words is "one hundred thirty-six thousand, six hundred sixty-five".

• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.029 sec. • engine limits •