616565164 has 12 divisors (see below), whose sum is σ = 1079163064. Its totient is φ = 308232864.

The previous prime is 616565161. The next prime is 616565167. The reversal of 616565164 is 461565616.

It is an interprime number because it is at equal distance from previous prime (616565161) and next prime (616565167).

It is not an unprimeable number, because it can be changed into a prime (616565161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40792 + ... + 53824.

Almost surely, 2^616565164 is an apocalyptic number.

It is an amenable number.

616565164 is a deficient number, since it is larger than the sum of its proper divisors (462597900).

616565164 is a wasteful number, since it uses less digits than its factorization.

616565164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24864 (or 24862 counting only the distinct ones).

The product of its digits is 129600, while the sum is 40.

The square root of 616565164 is about 24830.7302349327. The cubic root of 616565164 is about 851.1243087428.

The spelling of 616565164 in words is "six hundred sixteen million, five hundred sixty-five thousand, one hundred sixty-four".