764666339 has 2 divisors, whose sum is σ = 764666340. Its totient is φ = 764666338.

The previous prime is 764666327. The next prime is 764666363. The reversal of 764666339 is 933666467.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 764666339 - 2¹⁶ = 764600803 is a prime.

It is not a weakly prime, because it can be changed into another prime (764666369) 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, 382333169 + 382333170.

It is an arithmetic number, because the mean of its divisors is an integer number (382333170).

Almost surely, 2^764666339 is an apocalyptic number.

764666339 is a deficient number, since it is larger than the sum of its proper divisors (1).

764666339 is an equidigital number, since it uses as much as digits as its factorization.

764666339 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2939328, while the sum is 50.

The square root of 764666339 is about 27652.6009445766. The cubic root of 764666339 is about 914.4444412352. Note that the first 5 decimals are identical.

The spelling of 764666339 in words is "seven hundred sixty-four million, six hundred sixty-six thousand, three hundred thirty-nine".