866356884 has 30 divisors (see below), whose sum is σ = 2264828874. Its totient is φ = 288785520.

The previous prime is 866356853. The next prime is 866356903. The reversal of 866356884 is 488653668.

866356884 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 778410000 + 87946884 = 27900^2 + 9378^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 866356884.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1336647 + ... + 1337294.

Almost surely, 2^866356884 is an apocalyptic number.

It is an amenable number.

866356884 is an abundant number, since it is smaller than the sum of its proper divisors (1398471990).

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

866356884 is a wasteful number, since it uses less digits than its factorization.

866356884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2673957 (or 2673946 counting only the distinct ones).

The product of its digits is 6635520, while the sum is 54.

The square root of 866356884 is about 29433.9410205293. The cubic root of 866356884 is about 953.3058912124.

The spelling of 866356884 in words is "eight hundred sixty-six million, three hundred fifty-six thousand, eight hundred eighty-four".