764566647233 has 2 divisors, whose sum is σ = 764566647234. Its totient is φ = 764566647232.

The previous prime is 764566647227. The next prime is 764566647301. The reversal of 764566647233 is 332746665467.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 729833615809 + 34733031424 = 854303^2 + 186368^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-764566647233 is a prime.

It is a super-2 number, since 2×764566647233² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (764566647833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 382283323616 + 382283323617.

It is an arithmetic number, because the mean of its divisors is an integer number (382283323617).

Almost surely, 2^764566647233 is an apocalyptic number.

It is an amenable number.

764566647233 is a deficient number, since it is larger than the sum of its proper divisors (1).

764566647233 is an equidigital number, since it uses as much as digits as its factorization.

764566647233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 91445760, while the sum is 59.

The spelling of 764566647233 in words is "seven hundred sixty-four billion, five hundred sixty-six million, six hundred forty-seven thousand, two hundred thirty-three".