679738400 has 72 divisors (see below), whose sum is σ = 1810290384. Its totient is φ = 247174400.

The previous prime is 679738373. The next prime is 679738403. The reversal of 679738400 is 4837976.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (679738403) 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, 29822 + ... + 47421.

It is an arithmetic number, because the mean of its divisors is an integer number (25142922).

Almost surely, 2^679738400 is an apocalyptic number.

It is an amenable number.

679738400 is an abundant number, since it is smaller than the sum of its proper divisors (1130551984).

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

679738400 is a wasteful number, since it uses less digits than its factorization.

679738400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77274 (or 77261 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 44.

The square root of 679738400 is about 26071.7931872743. The cubic root of 679738400 is about 879.2531542188.

The spelling of 679738400 in words is "six hundred seventy-nine million, seven hundred thirty-eight thousand, four hundred".