772981960 has 16 divisors (see below), whose sum is σ = 1739209500. Its totient is φ = 309192768.

The previous prime is 772981933. The next prime is 772981961. The reversal of 772981960 is 69189277.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 684659556 + 88322404 = 26166^2 + 9398^2 .

It is a super-2 number, since 2×772981960² = 1195002220970883200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (772981961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9662235 + ... + 9662314.

Almost surely, 2^772981960 is an apocalyptic number.

It is an amenable number.

772981960 is an abundant number, since it is smaller than the sum of its proper divisors (966227540).

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

772981960 is a wasteful number, since it uses less digits than its factorization.

772981960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19324560 (or 19324556 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 49.

The square root of 772981960 is about 27802.5531201723. The cubic root of 772981960 is about 917.7473083971.

The spelling of 772981960 in words is "seven hundred seventy-two million, nine hundred eighty-one thousand, nine hundred sixty".