616704656 has 10 divisors (see below), whose sum is σ = 1194865302. Its totient is φ = 308352320.

The previous prime is 616704637. The next prime is 616704677. The reversal of 616704656 is 656407616.

It can be written as a sum of positive squares in only one way, i.e., 339149056 + 277555600 = 18416^2 + 16660^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19272005 + ... + 19272036.

Almost surely, 2^616704656 is an apocalyptic number.

It is an amenable number.

616704656 is a deficient number, since it is larger than the sum of its proper divisors (578160646).

616704656 is a wasteful number, since it uses less digits than its factorization.

616704656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38544049 (or 38544043 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 41.

The square root of 616704656 is about 24833.5389342719. The cubic root of 616704656 is about 851.1884901609.

The spelling of 616704656 in words is "six hundred sixteen million, seven hundred four thousand, six hundred fifty-six".