765256601 has 2 divisors, whose sum is σ = 765256602. Its totient is φ = 765256600.

The previous prime is 765256549. The next prime is 765256603. The reversal of 765256601 is 106652567.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 568584025 + 196672576 = 23845^2 + 14024^2 .

It is a cyclic number.

It is not a de Polignac number, because 765256601 - 2²² = 761062297 is a prime.

Together with 765256603, 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 (765256603) 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, 382628300 + 382628301.

It is an arithmetic number, because the mean of its divisors is an integer number (382628301).

Almost surely, 2^765256601 is an apocalyptic number.

It is an amenable number.

765256601 is a deficient number, since it is larger than the sum of its proper divisors (1).

765256601 is an equidigital number, since it uses as much as digits as its factorization.

765256601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 765256601 is about 27663.2716973246. The cubic root of 765256601 is about 914.6796736725.

The spelling of 765256601 in words is "seven hundred sixty-five million, two hundred fifty-six thousand, six hundred one".