764365913 has 2 divisors, whose sum is σ = 764365914. Its totient is φ = 764365912.

The previous prime is 764365871. The next prime is 764365957. The reversal of 764365913 is 319563467.

It is a happy number.

It is an a-pointer prime, because the next prime (764365957) can be obtained adding 764365913 to its sum of digits (44).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 382280704 + 382085209 = 19552^2 + 19547^2 .

It is a cyclic number.

It is not a de Polignac number, because 764365913 - 2¹² = 764361817 is a prime.

It is not a weakly prime, because it can be changed into another prime (764365313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 382182956 + 382182957.

It is an arithmetic number, because the mean of its divisors is an integer number (382182957).

Almost surely, 2^764365913 is an apocalyptic number.

It is an amenable number.

764365913 is a deficient number, since it is larger than the sum of its proper divisors (1).

764365913 is an equidigital number, since it uses as much as digits as its factorization.

764365913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 408240, while the sum is 44.

The square root of 764365913 is about 27647.1682636758. The cubic root of 764365913 is about 914.3246683540.

The spelling of 764365913 in words is "seven hundred sixty-four million, three hundred sixty-five thousand, nine hundred thirteen".