961787628 has 24 divisors (see below), whose sum is σ = 2493523760. Its totient is φ = 320595840.

The previous prime is 961787609. The next prime is 961787641. The reversal of 961787628 is 826787169.

961787628 is a `hidden beast` number, since 9 + 6 + 1 + 7 + 8 + 7 + 628 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 4452613 + ... + 4452828.

Almost surely, 2^961787628 is an apocalyptic number.

It is an amenable number.

961787628 is an abundant number, since it is smaller than the sum of its proper divisors (1531736132).

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

961787628 is a wasteful number, since it uses less digits than its factorization.

961787628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8905454 (or 8905446 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 54.

The square root of 961787628 is about 31012.7010755271. The cubic root of 961787628 is about 987.0967653024.

The spelling of 961787628 in words is "nine hundred sixty-one million, seven hundred eighty-seven thousand, six hundred twenty-eight".