8864137665 has 32 divisors (see below), whose sum is σ = 15762764160. Its totient is φ = 4726251072.

The previous prime is 8864137561. The next prime is 8864137679. The reversal of 8864137665 is 5667314688.

It is not a de Polignac number, because 8864137665 - 2¹² = 8864133569 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 688467 + ... + 701223.

It is an arithmetic number, because the mean of its divisors is an integer number (492586380).

Almost surely, 2^8864137665 is an apocalyptic number.

It is an amenable number.

8864137665 is a deficient number, since it is larger than the sum of its proper divisors (6898626495).

8864137665 is a wasteful number, since it uses less digits than its factorization.

8864137665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17918 (or 17912 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 54.

The square root of 8864137665 is about 94149.5494678546. The cubic root of 8864137665 is about 2069.5638547613.

The spelling of 8864137665 in words is "eight billion, eight hundred sixty-four million, one hundred thirty-seven thousand, six hundred sixty-five".