656142656 has 56 divisors (see below), whose sum is σ = 1476024480. Its totient is φ = 286889472.

The previous prime is 656142611. The next prime is 656142671. The reversal of 656142656 is 656241656.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4946 + ... + 36561.

It is an arithmetic number, because the mean of its divisors is an integer number (26357580).

Almost surely, 2^656142656 is an apocalyptic number.

It is an amenable number.

656142656 is an abundant number, since it is smaller than the sum of its proper divisors (819881824).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

656142656 is a wasteful number, since it uses less digits than its factorization.

656142656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41551 (or 41541 counting only the distinct ones).

The product of its digits is 259200, while the sum is 41.

The square root of 656142656 is about 25615.2816888669. The cubic root of 656142656 is about 868.9592769739.

The spelling of 656142656 in words is "six hundred fifty-six million, one hundred forty-two thousand, six hundred fifty-six".