679854772 has 24 divisors (see below), whose sum is σ = 1235210760. Its totient is φ = 327022080.

The previous prime is 679854733. The next prime is 679854793. The reversal of 679854772 is 277458976.

It can be written as a sum of positive squares in 4 ways, for example, as 357436836 + 322417936 = 18906^2 + 17956^2 .

It is a super-2 number, since 2×679854772² = 924405022022343968, which contains 22 as substring.

It is a congruent number.

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, 22168 + ... + 43024.

It is an arithmetic number, because the mean of its divisors is an integer number (51467115).

Almost surely, 2^679854772 is an apocalyptic number.

It is an amenable number.

679854772 is a deficient number, since it is larger than the sum of its proper divisors (555355988).

679854772 is a wasteful number, since it uses less digits than its factorization.

679854772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21171 (or 21169 counting only the distinct ones).

The product of its digits is 5927040, while the sum is 55.

The square root of 679854772 is about 26074.0248523315. The cubic root of 679854772 is about 879.3033277411.

The spelling of 679854772 in words is "six hundred seventy-nine million, eight hundred fifty-four thousand, seven hundred seventy-two".