764563 has 2 divisors, whose sum is σ = 764564. Its totient is φ = 764562.

The previous prime is 764551. The next prime is 764587. The reversal of 764563 is 365467.

It is a weak prime.

It is an emirp because it is prime and its reverse (365467) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 764563 - 2⁹ = 764051 is a prime.

It is a nialpdrome in base 16.

It is not a weakly prime, because it can be changed into another prime (764593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 382281 + 382282.

It is an arithmetic number, because the mean of its divisors is an integer number (382282).

2⁷⁶⁴⁵⁶³ is an apocalyptic number.

764563 is a deficient number, since it is larger than the sum of its proper divisors (1).

764563 is an equidigital number, since it uses as much as digits as its factorization.

764563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 31.

The square root of 764563 is about 874.3929322679. The cubic root of 764563 is about 91.4403245912.

The spelling of 764563 in words is "seven hundred sixty-four thousand, five hundred sixty-three".