764977 has 2 divisors, whose sum is σ = 764978. Its totient is φ = 764976.

The previous prime is 764971. The next prime is 764989. The reversal of 764977 is 779467.

It is a happy number.

764977 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 495616 + 269361 = 704^2 + 519^2 .

It is a cyclic number.

It is not a de Polignac number, because 764977 - 2³ = 764969 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (764971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 382488 + 382489.

It is an arithmetic number, because the mean of its divisors is an integer number (382489).

2⁷⁶⁴⁹⁷⁷ is an apocalyptic number.

It is an amenable number.

764977 is a deficient number, since it is larger than the sum of its proper divisors (1).

764977 is an equidigital number, since it uses as much as digits as its factorization.

764977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 74088, while the sum is 40.

The square root of 764977 is about 874.6296359031. The cubic root of 764977 is about 91.4568261586.

The spelling of 764977 in words is "seven hundred sixty-four thousand, nine hundred seventy-seven".