8320511660 has 24 divisors (see below), whose sum is σ = 17475218880. Its totient is φ = 3327796224.

The previous prime is 8320511629. The next prime is 8320511677. The reversal of 8320511660 is 661150238.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183101 + ... + 223979.

It is an arithmetic number, because the mean of its divisors is an integer number (728134120).

Almost surely, 2^8320511660 is an apocalyptic number.

It is an amenable number.

8320511660 is an abundant number, since it is smaller than the sum of its proper divisors (9154707220).

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

8320511660 is a wasteful number, since it uses less digits than its factorization.

8320511660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51065 (or 51063 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 8320511660 is about 91216.8386867249. The cubic root of 8320511660 is about 2026.3603447008.

Adding to 8320511660 its reverse (661150238), we get a palindrome (8981661898).

The spelling of 8320511660 in words is "eight billion, three hundred twenty million, five hundred eleven thousand, six hundred sixty".