656539102 has 4 divisors (see below), whose sum is σ = 984808656. Its totient is φ = 328269550.

The previous prime is 656539057. The next prime is 656539123. The reversal of 656539102 is 201935656.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164134774 + ... + 164134777.

It is an arithmetic number, because the mean of its divisors is an integer number (246202164).

Almost surely, 2^656539102 is an apocalyptic number.

656539102 is a deficient number, since it is larger than the sum of its proper divisors (328269554).

656539102 is a wasteful number, since it uses less digits than its factorization.

656539102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328269553.

The product of its (nonzero) digits is 48600, while the sum is 37.

The square root of 656539102 is about 25623.0189868407. The cubic root of 656539102 is about 869.1342521705.

The spelling of 656539102 in words is "six hundred fifty-six million, five hundred thirty-nine thousand, one hundred two".