872655872 has 66 divisors (see below), whose sum is σ = 1917736044. Its totient is φ = 396605440.

The previous prime is 872655863. The next prime is 872655877. The reversal of 872655872 is 278556278.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 872655872.

It is not an unprimeable number, because it can be changed into a prime (872655877) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 120383 + ... + 127425.

Almost surely, 2^872655872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 872655872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (958868022).

872655872 is an abundant number, since it is smaller than the sum of its proper divisors (1045080172).

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

872655872 is a wasteful number, since it uses less digits than its factorization.

872655872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7085 (or 7056 counting only the distinct ones).

The product of its digits is 1881600, while the sum is 50.

The square root of 872655872 is about 29540.7493472999. The cubic root of 872655872 is about 955.6107026483.

The spelling of 872655872 in words is "eight hundred seventy-two million, six hundred fifty-five thousand, eight hundred seventy-two".