764065619 has 2 divisors, whose sum is σ = 764065620. Its totient is φ = 764065618.

The previous prime is 764065583. The next prime is 764065633. The reversal of 764065619 is 916560467.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-764065619 is a prime.

It is a super-2 number, since 2×764065619² = 1167592540275706322, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 764065619.

It is not a weakly prime, because it can be changed into another prime (764065219) 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, 382032809 + 382032810.

It is an arithmetic number, because the mean of its divisors is an integer number (382032810).

Almost surely, 2^764065619 is an apocalyptic number.

764065619 is a deficient number, since it is larger than the sum of its proper divisors (1).

764065619 is an equidigital number, since it uses as much as digits as its factorization.

764065619 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 764065619 is about 27641.7369027346. The cubic root of 764065619 is about 914.2049167311.

The spelling of 764065619 in words is "seven hundred sixty-four million, sixty-five thousand, six hundred nineteen".