616478504 has 8 divisors (see below), whose sum is σ = 1155897210. Its totient is φ = 308239248.

The previous prime is 616478479. The next prime is 616478507. The reversal of 616478504 is 405874616.

It can be written as a sum of positive squares in only one way, i.e., 440916004 + 175562500 = 20998^2 + 13250^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (616478507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38529899 + ... + 38529914.

Almost surely, 2^616478504 is an apocalyptic number.

It is an amenable number.

616478504 is a deficient number, since it is larger than the sum of its proper divisors (539418706).

616478504 is a wasteful number, since it uses less digits than its factorization.

616478504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77059819 (or 77059815 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 616478504 is about 24828.9851584796. The cubic root of 616478504 is about 851.0844308878.

The spelling of 616478504 in words is "six hundred sixteen million, four hundred seventy-eight thousand, five hundred four".