616116520 has 32 divisors (see below), whose sum is σ = 1412422920. Its totient is φ = 241795840.

The previous prime is 616116517. The next prime is 616116521. The reversal of 616116520 is 25611616.

It can be written as a sum of positive squares in 4 ways, for example, as 615734596 + 381924 = 24814^2 + 618^2 .

It is not an unprimeable number, because it can be changed into a prime (616116521) 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, 143191 + ... + 147430.

Almost surely, 2^616116520 is an apocalyptic number.

It is an amenable number.

616116520 is an abundant number, since it is smaller than the sum of its proper divisors (796306400).

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

616116520 is a wasteful number, since it uses less digits than its factorization.

616116520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290685 (or 290681 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 616116520 is about 24821.6945432821. The cubic root of 616116520 is about 850.9178182843.

The spelling of 616116520 in words is "six hundred sixteen million, one hundred sixteen thousand, five hundred twenty".