764223643828 has 24 divisors (see below), whose sum is σ = 1345545556992. Its totient is φ = 379782552864.

The previous prime is 764223643819. The next prime is 764223643871. The reversal of 764223643828 is 828346322467.

It is a congruent number.

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, 6647725 + ... + 6761707.

It is an arithmetic number, because the mean of its divisors is an integer number (56064398208).

Almost surely, 2^764223643828 is an apocalyptic number.

It is an amenable number.

764223643828 is a deficient number, since it is larger than the sum of its proper divisors (581321913164).

764223643828 is a wasteful number, since it uses less digits than its factorization.

764223643828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124191 (or 124189 counting only the distinct ones).

The product of its digits is 18579456, while the sum is 55.

The spelling of 764223643828 in words is "seven hundred sixty-four billion, two hundred twenty-three million, six hundred forty-three thousand, eight hundred twenty-eight".