999986608 has 10 divisors (see below), whose sum is σ = 1937474084. Its totient is φ = 499993296.

The previous prime is 999986599. The next prime is 999986609. The reversal of 999986608 is 806689999.

It is a self number, because there is not a number n which added to its sum of digits gives 999986608.

It is not an unprimeable number, because it can be changed into a prime (999986609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31249566 + ... + 31249597.

Almost surely, 2^999986608 is an apocalyptic number.

It is an amenable number.

999986608 is a deficient number, since it is larger than the sum of its proper divisors (937487476).

999986608 is a wasteful number, since it uses less digits than its factorization.

999986608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62499171 (or 62499165 counting only the distinct ones).

The product of its (nonzero) digits is 15116544, while the sum is 64.

The square root of 999986608 is about 31622.5648548627. The cubic root of 999986608 is about 999.9955359801.

The spelling of 999986608 in words is "nine hundred ninety-nine million, nine hundred eighty-six thousand, six hundred eight".