765040117 has 2 divisors, whose sum is σ = 765040118. Its totient is φ = 765040116.

The previous prime is 765040091. The next prime is 765040127. The reversal of 765040117 is 711040567.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 465092356 + 299947761 = 21566^2 + 17319^2 .

It is an emirp because it is prime and its reverse (711040567) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-765040117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (765040127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 382520058 + 382520059.

It is an arithmetic number, because the mean of its divisors is an integer number (382520059).

Almost surely, 2^765040117 is an apocalyptic number.

It is an amenable number.

765040117 is a deficient number, since it is larger than the sum of its proper divisors (1).

765040117 is an equidigital number, since it uses as much as digits as its factorization.

765040117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5880, while the sum is 31.

The square root of 765040117 is about 27659.3585789693. The cubic root of 765040117 is about 914.5934140705.

The spelling of 765040117 in words is "seven hundred sixty-five million, forty thousand, one hundred seventeen".