679940460 has 96 divisors (see below), whose sum is σ = 2226739200. Its totient is φ = 171771840.

The previous prime is 679940447. The next prime is 679940461. The reversal of 679940460 is 64049976.

679940460 is a `hidden beast` number, since 67 + 99 + 40 + 460 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (679940461) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22876 + ... + 43395.

It is an arithmetic number, because the mean of its divisors is an integer number (23195200).

Almost surely, 2^679940460 is an apocalyptic number.

679940460 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

679940460 is an abundant number, since it is smaller than the sum of its proper divisors (1546798740).

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

679940460 is a wasteful number, since it uses less digits than its factorization.

679940460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66308 (or 66300 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The square root of 679940460 is about 26075.6679684337. The cubic root of 679940460 is about 879.3402682670.

The spelling of 679940460 in words is "six hundred seventy-nine million, nine hundred forty thousand, four hundred sixty".