656954938 has 4 divisors (see below), whose sum is σ = 985432410. Its totient is φ = 328477468.

The previous prime is 656954927. The next prime is 656954999. The reversal of 656954938 is 839459656.

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

It can be written as a sum of positive squares in only one way, i.e., 415059129 + 241895809 = 20373^2 + 15553^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164238733 + ... + 164238736.

Almost surely, 2^656954938 is an apocalyptic number.

656954938 is a deficient number, since it is larger than the sum of its proper divisors (328477472).

656954938 is a wasteful number, since it uses less digits than its factorization.

656954938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328477471.

The product of its digits is 6998400, while the sum is 55.

The square root of 656954938 is about 25631.1322028505. The cubic root of 656954938 is about 869.3177096535.

The spelling of 656954938 in words is "six hundred fifty-six million, nine hundred fifty-four thousand, nine hundred thirty-eight".