76812691 has 2 divisors, whose sum is σ = 76812692. Its totient is φ = 76812690.

The previous prime is 76812683. The next prime is 76812719. The reversal of 76812691 is 19621867.

It is a weak prime.

It is an emirp because it is prime and its reverse (19621867) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 76812691 - 2³ = 76812683 is a prime.

It is a super-2 number, since 2×76812691² = 11800378997322962, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (76812641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38406345 + 38406346.

It is an arithmetic number, because the mean of its divisors is an integer number (38406346).

Almost surely, 2^76812691 is an apocalyptic number.

76812691 is a deficient number, since it is larger than the sum of its proper divisors (1).

76812691 is an equidigital number, since it uses as much as digits as its factorization.

76812691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 40.

The square root of 76812691 is about 8764.2849679823. The cubic root of 76812691 is about 425.0868399250.

The spelling of 76812691 in words is "seventy-six million, eight hundred twelve thousand, six hundred ninety-one".