766765117 has 2 divisors, whose sum is σ = 766765118. Its totient is φ = 766765116.

The previous prime is 766765061. The next prime is 766765163. The reversal of 766765117 is 711567667.

It is an a-pointer prime, because the next prime (766765163) can be obtained adding 766765117 to its sum of digits (46).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 723125881 + 43639236 = 26891^2 + 6606^2 .

It is a cyclic number.

It is not a de Polignac number, because 766765117 - 2²⁷ = 632547389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (766765217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 383382558 + 383382559.

It is an arithmetic number, because the mean of its divisors is an integer number (383382559).

Almost surely, 2^766765117 is an apocalyptic number.

It is an amenable number.

766765117 is a deficient number, since it is larger than the sum of its proper divisors (1).

766765117 is an equidigital number, since it uses as much as digits as its factorization.

766765117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 370440, while the sum is 46.

The square root of 766765117 is about 27690.5239567618. The cubic root of 766765117 is about 915.2803015144.

The spelling of 766765117 in words is "seven hundred sixty-six million, seven hundred sixty-five thousand, one hundred seventeen".