8631534660 has 96 divisors (see below), whose sum is σ = 27638150400. Its totient is φ = 1971691008.

The previous prime is 8631534649. The next prime is 8631534689. The reversal of 8631534660 is 664351368.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 782866 + ... + 793814.

It is an arithmetic number, because the mean of its divisors is an integer number (287897400).

Almost surely, 2^8631534660 is an apocalyptic number.

It is an amenable number.

8631534660 is an abundant number, since it is smaller than the sum of its proper divisors (19006615740).

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

8631534660 is a wasteful number, since it uses less digits than its factorization.

8631534660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12845 (or 12843 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 42.

The square root of 8631534660 is about 92906.0528706284. The cubic root of 8631534660 is about 2051.3007536977.

The spelling of 8631534660 in words is "eight billion, six hundred thirty-one million, five hundred thirty-four thousand, six hundred sixty".