764165999 has 2 divisors, whose sum is σ = 764166000. Its totient is φ = 764165998.

The previous prime is 764165953. The next prime is 764166041. The reversal of 764165999 is 999561467.

It is a strong prime.

It is an emirp because it is prime and its reverse (999561467) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 764165999 - 2¹² = 764161903 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (764155999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 382082999 + 382083000.

It is an arithmetic number, because the mean of its divisors is an integer number (382083000).

Almost surely, 2^764165999 is an apocalyptic number.

764165999 is a deficient number, since it is larger than the sum of its proper divisors (1).

764165999 is an equidigital number, since it uses as much as digits as its factorization.

764165999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3674160, while the sum is 56.

The square root of 764165999 is about 27643.5525756007. The cubic root of 764165999 is about 914.2449498857.

The spelling of 764165999 in words is "seven hundred sixty-four million, one hundred sixty-five thousand, nine hundred ninety-nine".