679561284 has 12 divisors (see below), whose sum is σ = 1585643024. Its totient is φ = 226520424.

The previous prime is 679561279. The next prime is 679561291. The reversal of 679561284 is 482165976.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28315042 + ... + 28315065.

Almost surely, 2^679561284 is an apocalyptic number.

It is an amenable number.

679561284 is an abundant number, since it is smaller than the sum of its proper divisors (906081740).

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

679561284 is a wasteful number, since it uses less digits than its factorization.

679561284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56630114 (or 56630112 counting only the distinct ones).

The product of its digits is 725760, while the sum is 48.

The square root of 679561284 is about 26068.3962682786. The cubic root of 679561284 is about 879.1767800678.

The spelling of 679561284 in words is "six hundred seventy-nine million, five hundred sixty-one thousand, two hundred eighty-four".