679299990 has 64 divisors (see below), whose sum is σ = 1653220800. Its totient is φ = 178619904.

The previous prime is 679299961. The next prime is 679300001. The reversal of 679299990 is 99992976.

It is a super-2 number, since 2×679299990² = 922896952828000200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 957756 + ... + 958464.

It is an arithmetic number, because the mean of its divisors is an integer number (25831575).

Almost surely, 2^679299990 is an apocalyptic number.

679299990 is an abundant number, since it is smaller than the sum of its proper divisors (973920810).

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

679299990 is a wasteful number, since it uses less digits than its factorization.

679299990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1121.

The product of its (nonzero) digits is 4960116, while the sum is 60.

The square root of 679299990 is about 26063.3840857246. The cubic root of 679299990 is about 879.0640833067.

The spelling of 679299990 in words is "six hundred seventy-nine million, two hundred ninety-nine thousand, nine hundred ninety".