764456969640 has 256 divisors, whose sum is σ = 2919942950400. Its totient is φ = 155730161664.

The previous prime is 764456969603. The next prime is 764456969701. The reversal of 764456969640 is 46969654467.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 890307 + ... + 1523666.

It is an arithmetic number, because the mean of its divisors is an integer number (11406027150).

Almost surely, 2^764456969640 is an apocalyptic number.

764456969640 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

764456969640 is an abundant number, since it is smaller than the sum of its proper divisors (2155485980760).

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

764456969640 is a wasteful number, since it uses less digits than its factorization.

764456969640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2414036 (or 2414032 counting only the distinct ones).

The product of its (nonzero) digits is 235146240, while the sum is 66.

The spelling of 764456969640 in words is "seven hundred sixty-four billion, four hundred fifty-six million, nine hundred sixty-nine thousand, six hundred forty".