679139692 has 48 divisors (see below), whose sum is σ = 1529579520. Its totient is φ = 256060800.

The previous prime is 679139641. The next prime is 679139701. The reversal of 679139692 is 296931976.

It is a super-2 number, since 2×679139692² = 922461442499709728, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26017 + ... + 45112.

It is an arithmetic number, because the mean of its divisors is an integer number (31866240).

Almost surely, 2^679139692 is an apocalyptic number.

679139692 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

679139692 is an abundant number, since it is smaller than the sum of its proper divisors (850439828).

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

679139692 is a wasteful number, since it uses less digits than its factorization.

679139692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71182 (or 71180 counting only the distinct ones).

The product of its digits is 1102248, while the sum is 52.

The square root of 679139692 is about 26060.3087472117. The cubic root of 679139692 is about 878.9949320716.

The spelling of 679139692 in words is "six hundred seventy-nine million, one hundred thirty-nine thousand, six hundred ninety-two".