959631660 has 144 divisors (see below), whose sum is σ = 3236163840. Its totient is φ = 228579840.

The previous prime is 959631653. The next prime is 959631661. The reversal of 959631660 is 66136959.

959631660 is a `hidden beast` number, since 9 + 5 + 9 + 631 + 6 + 6 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (959631661) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 65926 + ... + 79154.

It is an arithmetic number, because the mean of its divisors is an integer number (22473360).

Almost surely, 2^959631660 is an apocalyptic number.

959631660 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 959631660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1618081920).

959631660 is an abundant number, since it is smaller than the sum of its proper divisors (2276532180).

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

959631660 is a wasteful number, since it uses less digits than its factorization.

959631660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13288 (or 13283 counting only the distinct ones).

The product of its (nonzero) digits is 262440, while the sum is 45.

The square root of 959631660 is about 30977.9221381938. The cubic root of 959631660 is about 986.3586462931.

The spelling of 959631660 in words is "nine hundred fifty-nine million, six hundred thirty-one thousand, six hundred sixty".