679672644 has 48 divisors (see below), whose sum is σ = 1870934016. Its totient is φ = 187927200.

The previous prime is 679672603. The next prime is 679672657. The reversal of 679672644 is 446276976.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127902 + ... + 133109.

It is an arithmetic number, because the mean of its divisors is an integer number (38977792).

Almost surely, 2^679672644 is an apocalyptic number.

It is an amenable number.

679672644 is an abundant number, since it is smaller than the sum of its proper divisors (1191261372).

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

679672644 is a wasteful number, since it uses less digits than its factorization.

679672644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261056 (or 261054 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 51.

The square root of 679672644 is about 26070.5321004386. The cubic root of 679672644 is about 879.2248011372.

The spelling of 679672644 in words is "six hundred seventy-nine million, six hundred seventy-two thousand, six hundred forty-four".