764307813 has 8 divisors (see below), whose sum is σ = 1072712800. Its totient is φ = 482720688.

The previous prime is 764307799. The next prime is 764307839. The reversal of 764307813 is 318703467.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 764307813 - 2⁵ = 764307781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (764307893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6704398 + ... + 6704511.

It is an arithmetic number, because the mean of its divisors is an integer number (134089100).

Almost surely, 2^764307813 is an apocalyptic number.

It is an amenable number.

764307813 is a deficient number, since it is larger than the sum of its proper divisors (308404987).

764307813 is a wasteful number, since it uses less digits than its factorization.

764307813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13408931.

The product of its (nonzero) digits is 84672, while the sum is 39.

The square root of 764307813 is about 27646.1175031866. The cubic root of 764307813 is about 914.3015016096.

The spelling of 764307813 in words is "seven hundred sixty-four million, three hundred seven thousand, eight hundred thirteen".