961992256 has 21 divisors (see below), whose sum is σ = 1909445889. Its totient is φ = 480872064.

The previous prime is 961992221. The next prime is 961992271. The reversal of 961992256 is 652299169.

The square root of 961992256 is 31016.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 244609600 + 717382656 = 15640^2 + 26784^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 246190 + ... + 250066.

Almost surely, 2^961992256 is an apocalyptic number.

961992256 is the 31016-th square number.

It is an amenable number.

961992256 is a deficient number, since it is larger than the sum of its proper divisors (947453633).

961992256 is an frugal number, since it uses more digits than its factorization.

961992256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7766 (or 3879 counting only the distinct ones).

The product of its digits is 524880, while the sum is 49.

The cubic root of 961992256 is about 987.1667645787.

Multiplying 961992256 by its sum of digits (49), we get a square (47137620544 = 217112²).

The spelling of 961992256 in words is "nine hundred sixty-one million, nine hundred ninety-two thousand, two hundred fifty-six".