816579960 has 64 divisors (see below), whose sum is σ = 2799705600. Its totient is φ = 186646656.

The previous prime is 816579919. The next prime is 816579961. The reversal of 816579960 is 69975618.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (816579961) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 485220 + ... + 486899.

It is an arithmetic number, because the mean of its divisors is an integer number (43745400).

Almost surely, 2^816579960 is an apocalyptic number.

It is an amenable number.

816579960 is an abundant number, since it is smaller than the sum of its proper divisors (1983125640).

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

816579960 is a wasteful number, since it uses less digits than its factorization.

816579960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 972140 (or 972136 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 51.

The square root of 816579960 is about 28575.8632415541. The cubic root of 816579960 is about 934.6870791717.

The spelling of 816579960 in words is "eight hundred sixteen million, five hundred seventy-nine thousand, nine hundred sixty".