679132880 has 20 divisors (see below), whose sum is σ = 1578984132. Its totient is φ = 271653120.

The previous prime is 679132873. The next prime is 679132889. The reversal of 679132880 is 88231976.

It can be written as a sum of positive squares in 2 ways, for example, as 134003776 + 545129104 = 11576^2 + 23348^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×679132880² = 922442937394188800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679132889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4244501 + ... + 4244660.

Almost surely, 2^679132880 is an apocalyptic number.

It is an amenable number.

679132880 is an abundant number, since it is smaller than the sum of its proper divisors (899851252).

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

679132880 is a wasteful number, since it uses less digits than its factorization.

679132880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8489174 (or 8489168 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 679132880 is about 26060.1780500441. The cubic root of 679132880 is about 878.9919931900.

The spelling of 679132880 in words is "six hundred seventy-nine million, one hundred thirty-two thousand, eight hundred eighty".