866894980 has 48 divisors (see below), whose sum is σ = 2131307136. Its totient is φ = 289969920.

The previous prime is 866894971. The next prime is 866894983. The reversal of 866894980 is 89498668.

It is not an unprimeable number, because it can be changed into a prime (866894983) 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, 69774 + ... + 81253.

It is an arithmetic number, because the mean of its divisors is an integer number (44402232).

Almost surely, 2^866894980 is an apocalyptic number.

It is an amenable number.

866894980 is an abundant number, since it is smaller than the sum of its proper divisors (1264412156).

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

866894980 is a wasteful number, since it uses less digits than its factorization.

866894980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151084 (or 151082 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 58.

The square root of 866894980 is about 29443.0803415675. The cubic root of 866894980 is about 953.5032170992.

The spelling of 866894980 in words is "eight hundred sixty-six million, eight hundred ninety-four thousand, nine hundred eighty".