866736996 has 24 divisors (see below), whose sum is σ = 2022943104. Its totient is φ = 288832800.

The previous prime is 866736989. The next prime is 866737009. The reversal of 866736996 is 699637668.

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, 49846 + ... + 64946.

It is an arithmetic number, because the mean of its divisors is an integer number (84289296).

Almost surely, 2^866736996 is an apocalyptic number.

It is an amenable number.

866736996 is an abundant number, since it is smaller than the sum of its proper divisors (1156206108).

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

866736996 is a wasteful number, since it uses less digits than its factorization.

866736996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19891 (or 19889 counting only the distinct ones).

The product of its digits is 17635968, while the sum is 60.

The square root of 866736996 is about 29440.3973478620. The cubic root of 866736996 is about 953.4452910499.

The spelling of 866736996 in words is "eight hundred sixty-six million, seven hundred thirty-six thousand, nine hundred ninety-six".