915983660 has 24 divisors (see below), whose sum is σ = 1985617536. Its totient is φ = 354574080.

The previous prime is 915983659. The next prime is 915983669. The reversal of 915983660 is 66389519.

915983660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (915983669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 738077 + ... + 739316.

It is an arithmetic number, because the mean of its divisors is an integer number (82734064).

Almost surely, 2^915983660 is an apocalyptic number.

It is an amenable number.

915983660 is an abundant number, since it is smaller than the sum of its proper divisors (1069633876).

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

915983660 is a wasteful number, since it uses less digits than its factorization.

915983660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1477433 (or 1477431 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 47.

The square root of 915983660 is about 30265.2219552410. The cubic root of 915983660 is about 971.1714546293.

The spelling of 915983660 in words is "nine hundred fifteen million, nine hundred eighty-three thousand, six hundred sixty".