756772812 has 72 divisors (see below), whose sum is σ = 2042127360. Its totient is φ = 235599840.

The previous prime is 756772787. The next prime is 756772829. The reversal of 756772812 is 218277657.

756772812 is a `hidden beast` number, since 7 + 567 + 7 + 2 + 81 + 2 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40773 + ... + 56355.

It is an arithmetic number, because the mean of its divisors is an integer number (28362880).

Almost surely, 2^756772812 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 756772812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1021063680).

756772812 is an abundant number, since it is smaller than the sum of its proper divisors (1285354548).

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

756772812 is a wasteful number, since it uses less digits than its factorization.

756772812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15683 (or 15678 counting only the distinct ones).

The product of its digits is 329280, while the sum is 45.

The square root of 756772812 is about 27509.5040304256. The cubic root of 756772812 is about 911.2869975438.

The spelling of 756772812 in words is "seven hundred fifty-six million, seven hundred seventy-two thousand, eight hundred twelve".