866080998 has 40 divisors (see below), whose sum is σ = 2007593280. Its totient is φ = 278737200.

The previous prime is 866080981. The next prime is 866081011. The reversal of 866080998 is 899080668.

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

866080998 is a strobogrammatic number because it is the same when read upside-down.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 87478 + ... + 96873.

It is an arithmetic number, because the mean of its divisors is an integer number (50189832).

Almost surely, 2^866080998 is an apocalyptic number.

866080998 is an abundant number, since it is smaller than the sum of its proper divisors (1141512282).

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

866080998 is a wasteful number, since it uses less digits than its factorization.

866080998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184394 (or 184385 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 54.

The square root of 866080998 is about 29429.2541189885. The cubic root of 866080998 is about 953.2046890111.

The spelling of 866080998 in words is "eight hundred sixty-six million, eighty thousand, nine hundred ninety-eight".