679644888 has 64 divisors (see below), whose sum is σ = 1832406240. Its totient is φ = 208825344.

The previous prime is 679644883. The next prime is 679644893. The reversal of 679644888 is 888446976.

It is an interprime number because it is at equal distance from previous prime (679644883) and next prime (679644893).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679644881) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 340020 + ... + 342012.

Almost surely, 2^679644888 is an apocalyptic number.

It is an amenable number.

679644888 is an abundant number, since it is smaller than the sum of its proper divisors (1152761352).

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

679644888 is a wasteful number, since it uses less digits than its factorization.

679644888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3108 (or 3104 counting only the distinct ones).

The product of its digits is 18579456, while the sum is 60.

The square root of 679644888 is about 26069.9997698504. Note that the first 3 decimals coincide. The cubic root of 679644888 is about 879.2128325834.

The spelling of 679644888 in words is "six hundred seventy-nine million, six hundred forty-four thousand, eight hundred eighty-eight".