672016580 has 12 divisors (see below), whose sum is σ = 1411234860. Its totient is φ = 268806624.

The previous prime is 672016577. The next prime is 672016673. The reversal of 672016580 is 85610276.

It can be written as a sum of positive squares in 2 ways, for example, as 511031236 + 160985344 = 22606^2 + 12688^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 672016580.

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, 16800395 + ... + 16800434.

It is an arithmetic number, because the mean of its divisors is an integer number (117602905).

Almost surely, 2^672016580 is an apocalyptic number.

It is an amenable number.

672016580 is an abundant number, since it is smaller than the sum of its proper divisors (739218280).

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

672016580 is a wasteful number, since it uses less digits than its factorization.

672016580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33600838 (or 33600836 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 672016580 is about 25923.2825853517. The cubic root of 672016580 is about 875.9110315322.

The spelling of 672016580 in words is "six hundred seventy-two million, sixteen thousand, five hundred eighty".