8640164456 has 64 divisors (see below), whose sum is σ = 21385918080. Its totient is φ = 3168276480.

The previous prime is 8640164453. The next prime is 8640164497. The reversal of 8640164456 is 6544610468.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (8640164453) 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, 402065 + ... + 423008.

It is an arithmetic number, because the mean of its divisors is an integer number (334154970).

Almost surely, 2^8640164456 is an apocalyptic number.

It is an amenable number.

8640164456 is an abundant number, since it is smaller than the sum of its proper divisors (12745753624).

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

8640164456 is a wasteful number, since it uses less digits than its factorization.

8640164456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 825114 (or 825110 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 44.

The square root of 8640164456 is about 92952.4849371979. The cubic root of 8640164456 is about 2051.9841551796.

The spelling of 8640164456 in words is "eight billion, six hundred forty million, one hundred sixty-four thousand, four hundred fifty-six".