764313791 has 2 divisors, whose sum is σ = 764313792. Its totient is φ = 764313790.

The previous prime is 764313787. The next prime is 764313811. The reversal of 764313791 is 197313467.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 764313791 - 2² = 764313787 is a prime.

It is a super-2 number, since 2×764313791² = 1168351142225583362, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (764313701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 382156895 + 382156896.

It is an arithmetic number, because the mean of its divisors is an integer number (382156896).

Almost surely, 2^764313791 is an apocalyptic number.

764313791 is a deficient number, since it is larger than the sum of its proper divisors (1).

764313791 is an equidigital number, since it uses as much as digits as its factorization.

764313791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 95256, while the sum is 41.

The square root of 764313791 is about 27646.2256194223. The cubic root of 764313791 is about 914.3038853264.

The spelling of 764313791 in words is "seven hundred sixty-four million, three hundred thirteen thousand, seven hundred ninety-one".