998080866 has 20 divisors (see below), whose sum is σ = 2236440822. Its totient is φ = 332693568.

The previous prime is 998080847. The next prime is 998080873. The reversal of 998080866 is 668080899.

It can be written as a sum of positive squares in only one way, i.e., 950180625 + 47900241 = 30825^2 + 6921^2 .

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

998080866 is a strobogrammatic number because it is the same when read upside-down.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3080335 + ... + 3080658.

Almost surely, 2^998080866 is an apocalyptic number.

998080866 is an abundant number, since it is smaller than the sum of its proper divisors (1238359956).

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

998080866 is a wasteful number, since it uses less digits than its factorization.

998080866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6161007 (or 6160998 counting only the distinct ones).

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

The square root of 998080866 is about 31592.4178561882. The cubic root of 998080866 is about 999.3598789992.

The spelling of 998080866 in words is "nine hundred ninety-eight million, eighty thousand, eight hundred sixty-six".