616992864 has 48 divisors (see below), whose sum is σ = 1675462320. Its totient is φ = 198571520.

The previous prime is 616992863. The next prime is 616992869. The reversal of 616992864 is 468299616.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616992863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108027 + ... + 113594.

It is an arithmetic number, because the mean of its divisors is an integer number (34905465).

Almost surely, 2^616992864 is an apocalyptic number.

It is an amenable number.

616992864 is an abundant number, since it is smaller than the sum of its proper divisors (1058469456).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

616992864 is a wasteful number, since it uses less digits than its factorization.

616992864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221663 (or 221655 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 51.

The square root of 616992864 is about 24839.3410540618. The cubic root of 616992864 is about 851.3210663865.

The spelling of 616992864 in words is "six hundred sixteen million, nine hundred ninety-two thousand, eight hundred sixty-four".