961634660 has 24 divisors (see below), whose sum is σ = 2307923520. Its totient is φ = 329703264.

The previous prime is 961634627. The next prime is 961634717. The reversal of 961634660 is 66436169.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3434270 + ... + 3434549.

It is an arithmetic number, because the mean of its divisors is an integer number (96163480).

Almost surely, 2^961634660 is an apocalyptic number.

It is an amenable number.

961634660 is an abundant number, since it is smaller than the sum of its proper divisors (1346288860).

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

961634660 is a wasteful number, since it uses less digits than its factorization.

961634660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6868835 (or 6868833 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 41.

The square root of 961634660 is about 31010.2347620910. The cubic root of 961634660 is about 987.0444314263.

The spelling of 961634660 in words is "nine hundred sixty-one million, six hundred thirty-four thousand, six hundred sixty".