616881304 has 32 divisors (see below), whose sum is σ = 1252545840. Its totient is φ = 283132800.

The previous prime is 616881289. The next prime is 616881313. The reversal of 616881304 is 403188616.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2439 + ... + 35209.

Almost surely, 2^616881304 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 616881304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (626272920).

616881304 is an abundant number, since it is smaller than the sum of its proper divisors (635664536).

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

616881304 is a wasteful number, since it uses less digits than its factorization.

616881304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32971 (or 32967 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 616881304 is about 24837.0953213132. The cubic root of 616881304 is about 851.2697534738.

The spelling of 616881304 in words is "six hundred sixteen million, eight hundred eighty-one thousand, three hundred four".