76812091 has 2 divisors, whose sum is σ = 76812092. Its totient is φ = 76812090.

The previous prime is 76812067. The next prime is 76812107. The reversal of 76812091 is 19021867.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 76812091 - 2¹¹ = 76810043 is a prime.

It is not a weakly prime, because it can be changed into another prime (76812011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38406045 + 38406046.

It is an arithmetic number, because the mean of its divisors is an integer number (38406046).

Almost surely, 2^76812091 is an apocalyptic number.

76812091 is a deficient number, since it is larger than the sum of its proper divisors (1).

76812091 is an equidigital number, since it uses as much as digits as its factorization.

76812091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 76812091 is about 8764.2507380837. The cubic root of 76812091 is about 425.0857331080.

The spelling of 76812091 in words is "seventy-six million, eight hundred twelve thousand, ninety-one".