866366984 has 32 divisors (see below), whose sum is σ = 1869873600. Its totient is φ = 368625600.

The previous prime is 866366983. The next prime is 866367011. The reversal of 866366984 is 489663668.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is not an unprimeable number, because it can be changed into a prime (866366983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47867 + ... + 63434.

It is an arithmetic number, because the mean of its divisors is an integer number (58433550).

Almost surely, 2^866366984 is an apocalyptic number.

It is an amenable number.

866366984 is an abundant number, since it is smaller than the sum of its proper divisors (1003506616).

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

866366984 is a wasteful number, since it uses less digits than its factorization.

866366984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111453 (or 111449 counting only the distinct ones).

The product of its digits is 8957952, while the sum is 56.

The square root of 866366984 is about 29434.1125906660. The cubic root of 866366984 is about 953.3095957489.

The spelling of 866366984 in words is "eight hundred sixty-six million, three hundred sixty-six thousand, nine hundred eighty-four".