764336646220 has 24 divisors (see below), whose sum is σ = 1834407951264. Its totient is φ = 262058278656.

The previous prime is 764336646193. The next prime is 764336646251. The reversal of 764336646220 is 22646633467.

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, 2729773597 + ... + 2729773876.

It is an arithmetic number, because the mean of its divisors is an integer number (76433664636).

Almost surely, 2^764336646220 is an apocalyptic number.

764336646220 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

764336646220 is an abundant number, since it is smaller than the sum of its proper divisors (1070071305044).

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

764336646220 is a wasteful number, since it uses less digits than its factorization.

764336646220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5459547489 (or 5459547487 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 49.

The spelling of 764336646220 in words is "seven hundred sixty-four billion, three hundred thirty-six million, six hundred forty-six thousand, two hundred twenty".