765508897 has 2 divisors, whose sum is σ = 765508898. Its totient is φ = 765508896.

The previous prime is 765508867. The next prime is 765508937. The reversal of 765508897 is 798805567.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 475283601 + 290225296 = 21801^2 + 17036^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-765508897 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (765508837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 382754448 + 382754449.

It is an arithmetic number, because the mean of its divisors is an integer number (382754449).

Almost surely, 2^765508897 is an apocalyptic number.

It is an amenable number.

765508897 is a deficient number, since it is larger than the sum of its proper divisors (1).

765508897 is an equidigital number, since it uses as much as digits as its factorization.

765508897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4233600, while the sum is 55.

The square root of 765508897 is about 27667.8314473686. The cubic root of 765508897 is about 914.7801822978.

The spelling of 765508897 in words is "seven hundred sixty-five million, five hundred eight thousand, eight hundred ninety-seven".