864982866 has 32 divisors (see below), whose sum is σ = 1986566400. Its totient is φ = 248320080.

The previous prime is 864982861. The next prime is 864982879. The reversal of 864982866 is 668289468.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (864982861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 343636 + ... + 346143.

It is an arithmetic number, because the mean of its divisors is an integer number (62080200).

Almost surely, 2^864982866 is an apocalyptic number.

864982866 is an abundant number, since it is smaller than the sum of its proper divisors (1121583534).

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

864982866 is a wasteful number, since it uses less digits than its factorization.

864982866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 689814.

The product of its digits is 7962624, while the sum is 57.

The square root of 864982866 is about 29410.5910515243. The cubic root of 864982866 is about 952.8016523104.

The spelling of 864982866 in words is "eight hundred sixty-four million, nine hundred eighty-two thousand, eight hundred sixty-six".