8661265764 has 24 divisors (see below), whose sum is σ = 20232532320. Its totient is φ = 2883815424.

The previous prime is 8661265759. The next prime is 8661265771. The reversal of 8661265764 is 4675621668.

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 in 7 ways as a sum of consecutive naturals, for example, 398109 + ... + 419300.

It is an arithmetic number, because the mean of its divisors is an integer number (843022180).

Almost surely, 2^8661265764 is an apocalyptic number.

It is an amenable number.

8661265764 is an abundant number, since it is smaller than the sum of its proper divisors (11571266556).

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

8661265764 is a wasteful number, since it uses less digits than its factorization.

8661265764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 818299 (or 818297 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 51.

The square root of 8661265764 is about 93065.9216039899. The cubic root of 8661265764 is about 2053.6532726453.

The spelling of 8661265764 in words is "eight billion, six hundred sixty-one million, two hundred sixty-five thousand, seven hundred sixty-four".