764345873 has 2 divisors, whose sum is σ = 764345874. Its totient is φ = 764345872.

The previous prime is 764345839. The next prime is 764345887. The reversal of 764345873 is 378543467.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 493150849 + 271195024 = 22207^2 + 16468^2 .

It is a cyclic number.

It is not a de Polignac number, because 764345873 - 2⁶ = 764345809 is a prime.

It is a super-2 number, since 2×764345873² = 1168449227144264258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (764345893) 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, 382172936 + 382172937.

It is an arithmetic number, because the mean of its divisors is an integer number (382172937).

Almost surely, 2^764345873 is an apocalyptic number.

It is an amenable number.

764345873 is a deficient number, since it is larger than the sum of its proper divisors (1).

764345873 is an equidigital number, since it uses as much as digits as its factorization.

764345873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1693440, while the sum is 47.

The square root of 764345873 is about 27646.8058372030. The cubic root of 764345873 is about 914.3166777542.

The spelling of 764345873 in words is "seven hundred sixty-four million, three hundred forty-five thousand, eight hundred seventy-three".