656008135 has 4 divisors (see below), whose sum is σ = 787209768. Its totient is φ = 524806504.

The previous prime is 656008123. The next prime is 656008151. The reversal of 656008135 is 531800656.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 656008135 - 2⁵ = 656008103 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 656008135.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65600809 + ... + 65600818.

It is an arithmetic number, because the mean of its divisors is an integer number (196802442).

Almost surely, 2^656008135 is an apocalyptic number.

656008135 is a deficient number, since it is larger than the sum of its proper divisors (131201633).

656008135 is a wasteful number, since it uses less digits than its factorization.

656008135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131201632.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 656008135 is about 25612.6557584332. The cubic root of 656008135 is about 868.8998888418.

The spelling of 656008135 in words is "six hundred fifty-six million, eight thousand, one hundred thirty-five".