76659691 has 2 divisors, whose sum is σ = 76659692. Its totient is φ = 76659690.

The previous prime is 76659659. The next prime is 76659701. The reversal of 76659691 is 19695667.

It is a strong prime.

It is an emirp because it is prime and its reverse (19695667) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 76659691 - 2⁵ = 76659659 is a prime.

It is not a weakly prime, because it can be changed into another prime (76659601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38329845 + 38329846.

It is an arithmetic number, because the mean of its divisors is an integer number (38329846).

Almost surely, 2^76659691 is an apocalyptic number.

76659691 is a deficient number, since it is larger than the sum of its proper divisors (1).

76659691 is an equidigital number, since it uses as much as digits as its factorization.

76659691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 612360, while the sum is 49.

The square root of 76659691 is about 8755.5520100106. The cubic root of 76659691 is about 424.8044147343.

The spelling of 76659691 in words is "seventy-six million, six hundred fifty-nine thousand, six hundred ninety-one".