679868400 has 60 divisors (see below), whose sum is σ = 2177848952. Its totient is φ = 181297920.

The previous prime is 679868383. The next prime is 679868401. The reversal of 679868400 is 4868976.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 679868400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679868401) 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, 282079 + ... + 284478.

Almost surely, 2^679868400 is an apocalyptic number.

679868400 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

679868400 is an abundant number, since it is smaller than the sum of its proper divisors (1497980552).

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

679868400 is a wasteful number, since it uses less digits than its factorization.

679868400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566578 (or 566567 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 48.

The square root of 679868400 is about 26074.2861839016. The cubic root of 679868400 is about 879.3092030477.

The spelling of 679868400 in words is "six hundred seventy-nine million, eight hundred sixty-eight thousand, four hundred".