8965644690 has 32 divisors (see below), whose sum is σ = 21521111040. Its totient is φ = 2390442624.

The previous prime is 8965644679. The next prime is 8965644707. The reversal of 8965644690 is 964465698.

It is a happy number.

It is a super-2 number, since 2×8965644690² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8965644690.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 189942 + ... + 232398.

It is an arithmetic number, because the mean of its divisors is an integer number (672534720).

Almost surely, 2^8965644690 is an apocalyptic number.

8965644690 is an abundant number, since it is smaller than the sum of its proper divisors (12555466350).

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

8965644690 is a wasteful number, since it uses less digits than its factorization.

8965644690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49506.

The product of its (nonzero) digits is 11197440, while the sum is 57.

The square root of 8965644690 is about 94687.0882961347. The cubic root of 8965644690 is about 2077.4337101854.

The spelling of 8965644690 in words is "eight billion, nine hundred sixty-five million, six hundred forty-four thousand, six hundred ninety".