768711631 has 2 divisors, whose sum is σ = 768711632. Its totient is φ = 768711630.

The previous prime is 768711617. The next prime is 768711637. The reversal of 768711631 is 136117867.

It is a strong prime.

It is an emirp because it is prime and its reverse (136117867) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 768711631 - 2¹⁵ = 768678863 is a prime.

It is a super-2 number, since 2×768711631² = 1181835143269360322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (768711637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 384355815 + 384355816.

It is an arithmetic number, because the mean of its divisors is an integer number (384355816).

Almost surely, 2^768711631 is an apocalyptic number.

768711631 is a deficient number, since it is larger than the sum of its proper divisors (1).

768711631 is an equidigital number, since it uses as much as digits as its factorization.

768711631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42336, while the sum is 40.

The square root of 768711631 is about 27725.6493341454. The cubic root of 768711631 is about 916.0541588561.

The spelling of 768711631 in words is "seven hundred sixty-eight million, seven hundred eleven thousand, six hundred thirty-one".