8640992 has 12 divisors (see below), whose sum is σ = 17012016. Its totient is φ = 4320480.

The previous prime is 8640977. The next prime is 8641007. The reversal of 8640992 is 2990468.

It is an interprime number because it is at equal distance from previous prime (8640977) and next prime (8641007).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134984 + ... + 135047.

It is an arithmetic number, because the mean of its divisors is an integer number (1417668).

Almost surely, 2^8640992 is an apocalyptic number.

It is an amenable number.

8640992 is a deficient number, since it is larger than the sum of its proper divisors (8371024).

8640992 is a wasteful number, since it uses less digits than its factorization.

8640992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270041 (or 270033 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 8640992 is about 2939.5564291233. The cubic root of 8640992 is about 205.2049665235.

The spelling of 8640992 in words is "eight million, six hundred forty thousand, nine hundred ninety-two".