764224812 has 72 divisors (see below), whose sum is σ = 2083907280. Its totient is φ = 234748800.

The previous prime is 764224801. The next prime is 764224831. The reversal of 764224812 is 218422467.

764224812 is a `hidden beast` number, since 7 + 642 + 2 + 4 + 8 + 1 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 401062 + ... + 402962.

Almost surely, 2^764224812 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 764224812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1041953640).

764224812 is an abundant number, since it is smaller than the sum of its proper divisors (1319682468).

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

764224812 is a wasteful number, since it uses less digits than its factorization.

764224812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2783 (or 2778 counting only the distinct ones).

The product of its digits is 43008, while the sum is 36.

The square root of 764224812 is about 27644.6163294049. The cubic root of 764224812 is about 914.2684038250.

The spelling of 764224812 in words is "seven hundred sixty-four million, two hundred twenty-four thousand, eight hundred twelve".