656738996 has 12 divisors (see below), whose sum is σ = 1150668960. Its totient is φ = 327976440.

The previous prime is 656738983. The next prime is 656739029. The reversal of 656738996 is 699837656.

It is a super-2 number, since 2×656738996² = 862612217734176032, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94490 + ... + 101201.

It is an arithmetic number, because the mean of its divisors is an integer number (95889080).

Almost surely, 2^656738996 is an apocalyptic number.

It is an amenable number.

656738996 is a deficient number, since it is larger than the sum of its proper divisors (493929964).

656738996 is a wasteful number, since it uses less digits than its factorization.

656738996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196534 (or 196532 counting only the distinct ones).

The product of its digits is 14696640, while the sum is 59.

The square root of 656738996 is about 25626.9193622644. The cubic root of 656738996 is about 869.2224505695. Note that the first 3 decimals are identical.

The spelling of 656738996 in words is "six hundred fifty-six million, seven hundred thirty-eight thousand, nine hundred ninety-six".