872228703666 has 16 divisors (see below), whose sum is σ = 1754202981600. Its totient is φ = 289118638848.

The previous prime is 872228703653. The next prime is 872228703677. The reversal of 872228703666 is 666307822278.

872228703666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×872228703666² (a number of 25 digits) contains 22 as substring.

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, 406064431 + ... + 406066578.

It is an arithmetic number, because the mean of its divisors is an integer number (109637686350).

Almost surely, 2^872228703666 is an apocalyptic number.

872228703666 is an abundant number, since it is smaller than the sum of its proper divisors (881974277934).

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

872228703666 is a wasteful number, since it uses less digits than its factorization.

872228703666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812131193.

The product of its (nonzero) digits is 16257024, while the sum is 57.

The spelling of 872228703666 in words is "eight hundred seventy-two billion, two hundred twenty-eight million, seven hundred three thousand, six hundred sixty-six".