764969 has 2 divisors, whose sum is σ = 764970. Its totient is φ = 764968.

The previous prime is 764947. The next prime is 764971. The reversal of 764969 is 969467.

764969 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 659344 + 105625 = 812^2 + 325^2 .

It is an emirp because it is prime and its reverse (969467) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-764969 is a prime.

It is a super-2 number, since 2×764969² = 1170355141922, which contains 22 as substring.

Together with 764971, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (764989) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 382484 + 382485.

It is an arithmetic number, because the mean of its divisors is an integer number (382485).

2⁷⁶⁴⁹⁶⁹ is an apocalyptic number.

It is an amenable number.

764969 is a deficient number, since it is larger than the sum of its proper divisors (1).

764969 is an equidigital number, since it uses as much as digits as its factorization.

764969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81648, while the sum is 41.

The square root of 764969 is about 874.6250625268. The cubic root of 764969 is about 91.4565073441.

The spelling of 764969 in words is "seven hundred sixty-four thousand, nine hundred sixty-nine".