8390764564 has 48 divisors (see below), whose sum is σ = 18342206848. Its totient is φ = 3269870208.

The previous prime is 8390764559. The next prime is 8390764583. The reversal of 8390764564 is 4654670938.

It is a super-2 number, since 2×8390764564² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147639 + ... + 196414.

Almost surely, 2^8390764564 is an apocalyptic number.

It is an amenable number.

8390764564 is an abundant number, since it is smaller than the sum of its proper divisors (9951442284).

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

8390764564 is a wasteful number, since it uses less digits than its factorization.

8390764564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344144 (or 344142 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 52.

The square root of 8390764564 is about 91601.1166089148. The cubic root of 8390764564 is about 2032.0474512681.

The spelling of 8390764564 in words is "eight billion, three hundred ninety million, seven hundred sixty-four thousand, five hundred sixty-four".