765777996 has 96 divisors (see below), whose sum is σ = 2066677760. Its totient is φ = 244944000.

The previous prime is 765777989. The next prime is 765777997. The reversal of 765777996 is 699777567.

It is not an unprimeable number, because it can be changed into a prime (765777997) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 424296 + ... + 426096.

Almost surely, 2^765777996 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 765777996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1033338880).

765777996 is an abundant number, since it is smaller than the sum of its proper divisors (1300899764).

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

765777996 is a wasteful number, since it uses less digits than its factorization.

765777996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1972 (or 1964 counting only the distinct ones).

The product of its digits is 35006580, while the sum is 63.

The square root of 765777996 is about 27672.6940502727. The cubic root of 765777996 is about 914.8873604960.

The spelling of 765777996 in words is "seven hundred sixty-five million, seven hundred seventy-seven thousand, nine hundred ninety-six".