679424644 has 24 divisors (see below), whose sum is σ = 1269676800. Its totient is φ = 317415840.

The previous prime is 679424597. The next prime is 679424657. The reversal of 679424644 is 446424976.

It is a junction number, because it is equal to n+sod(n) for n = 679424594 and 679424603.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90874 + ... + 98065.

It is an arithmetic number, because the mean of its divisors is an integer number (52903200).

Almost surely, 2^679424644 is an apocalyptic number.

It is an amenable number.

679424644 is a deficient number, since it is larger than the sum of its proper divisors (590252156).

679424644 is a wasteful number, since it uses less digits than its factorization.

679424644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189003 (or 189001 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 46.

The square root of 679424644 is about 26065.7753385546. The cubic root of 679424644 is about 879.1178504954.

The spelling of 679424644 in words is "six hundred seventy-nine million, four hundred twenty-four thousand, six hundred forty-four".