768091613 has 2 divisors, whose sum is σ = 768091614. Its totient is φ = 768091612.

The previous prime is 768091609. The next prime is 768091631. The reversal of 768091613 is 316190867.

Together with next prime (768091631) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 684240964 + 83850649 = 26158^2 + 9157^2 .

It is a cyclic number.

It is not a de Polignac number, because 768091613 - 2² = 768091609 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (768591613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 384045806 + 384045807.

It is an arithmetic number, because the mean of its divisors is an integer number (384045807).

Almost surely, 2^768091613 is an apocalyptic number.

It is an amenable number.

768091613 is a deficient number, since it is larger than the sum of its proper divisors (1).

768091613 is an equidigital number, since it uses as much as digits as its factorization.

768091613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 768091613 is about 27714.4657715064. The cubic root of 768091613 is about 915.8078060344.

The spelling of 768091613 in words is "seven hundred sixty-eight million, ninety-one thousand, six hundred thirteen".