872072660 has 12 divisors (see below), whose sum is σ = 1831352628. Its totient is φ = 348829056.

The previous prime is 872072629. The next prime is 872072693. The reversal of 872072660 is 66270278.

It can be written as a sum of positive squares in 2 ways, for example, as 293573956 + 578498704 = 17134^2 + 24052^2 .

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, 21801797 + ... + 21801836.

It is an arithmetic number, because the mean of its divisors is an integer number (152612719).

Almost surely, 2^872072660 is an apocalyptic number.

It is an amenable number.

872072660 is an abundant number, since it is smaller than the sum of its proper divisors (959279968).

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

872072660 is a wasteful number, since it uses less digits than its factorization.

872072660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43603642 (or 43603640 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 38.

The square root of 872072660 is about 29530.8763838800. The cubic root of 872072660 is about 955.3977711252.

The spelling of 872072660 in words is "eight hundred seventy-two million, seventy-two thousand, six hundred sixty".