679992992 has 72 divisors (see below), whose sum is σ = 1590611904. Its totient is φ = 285194112.

The previous prime is 679992949. The next prime is 679992997. The reversal of 679992992 is 299299976.

It is a super-2 number, since 2×679992992² = 924780938338224128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (679992997) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69083 + ... + 78309.

It is an arithmetic number, because the mean of its divisors is an integer number (22091832).

Almost surely, 2^679992992 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 679992992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (795305952).

679992992 is an abundant number, since it is smaller than the sum of its proper divisors (910618912).

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

679992992 is a wasteful number, since it uses less digits than its factorization.

679992992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9298 (or 9283 counting only the distinct ones).

The product of its digits is 9920232, while the sum is 62.

The square root of 679992992 is about 26076.6752481983. The cubic root of 679992992 is about 879.3629135406.

The spelling of 679992992 in words is "six hundred seventy-nine million, nine hundred ninety-two thousand, nine hundred ninety-two".