764372563 has 2 divisors, whose sum is σ = 764372564. Its totient is φ = 764372562.

The previous prime is 764372509. The next prime is 764372569. The reversal of 764372563 is 365273467.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 764372563 - 2⁹ = 764372051 is a prime.

It is not a weakly prime, because it can be changed into another prime (764372569) 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, 382186281 + 382186282.

It is an arithmetic number, because the mean of its divisors is an integer number (382186282).

Almost surely, 2^764372563 is an apocalyptic number.

764372563 is a deficient number, since it is larger than the sum of its proper divisors (1).

764372563 is an equidigital number, since it uses as much as digits as its factorization.

764372563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 635040, while the sum is 43.

The square root of 764372563 is about 27647.2885288956. The cubic root of 764372563 is about 914.3273198945.

The spelling of 764372563 in words is "seven hundred sixty-four million, three hundred seventy-two thousand, five hundred sixty-three".