679021652 has 12 divisors (see below), whose sum is σ = 1190868756. Its totient is φ = 338773440.

The previous prime is 679021649. The next prime is 679021661. The reversal of 679021652 is 256120976.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 464574916 + 214446736 = 21554^2 + 14644^2 .

It is a super-2 number, since 2×679021652² = 922140807769618208, which contains 22 as substring.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 182273 + ... + 185960.

It is an arithmetic number, because the mean of its divisors is an integer number (99239063).

Almost surely, 2^679021652 is an apocalyptic number.

It is an amenable number.

679021652 is a deficient number, since it is larger than the sum of its proper divisors (511847104).

679021652 is a wasteful number, since it uses less digits than its factorization.

679021652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368698 (or 368696 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 679021652 is about 26058.0439020276. The cubic root of 679021652 is about 878.9440036324.

The spelling of 679021652 in words is "six hundred seventy-nine million, twenty-one thousand, six hundred fifty-two".