872666648 has 32 divisors (see below), whose sum is σ = 1892540160. Its totient is φ = 369492000.

The previous prime is 872666633. The next prime is 872666653. The reversal of 872666648 is 846666278.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 872666648.

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, 89228 + ... + 98523.

It is an arithmetic number, because the mean of its divisors is an integer number (59141880).

Almost surely, 2^872666648 is an apocalyptic number.

It is an amenable number.

872666648 is an abundant number, since it is smaller than the sum of its proper divisors (1019873512).

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

872666648 is a wasteful number, since it uses less digits than its factorization.

872666648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187847 (or 187843 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 53.

The square root of 872666648 is about 29540.9317388602. The cubic root of 872666648 is about 955.6146360883.

The spelling of 872666648 in words is "eight hundred seventy-two million, six hundred sixty-six thousand, six hundred forty-eight".