76819091 has 2 divisors, whose sum is σ = 76819092. Its totient is φ = 76819090.

The previous prime is 76819087. The next prime is 76819123. The reversal of 76819091 is 19091867.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 76819091 - 2² = 76819087 is a prime.

It is not a weakly prime, because it can be changed into another prime (76819021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38409545 + 38409546.

It is an arithmetic number, because the mean of its divisors is an integer number (38409546).

Almost surely, 2^76819091 is an apocalyptic number.

76819091 is a deficient number, since it is larger than the sum of its proper divisors (1).

76819091 is an equidigital number, since it uses as much as digits as its factorization.

76819091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 41.

The square root of 76819091 is about 8764.6500785827. The cubic root of 76819091 is about 425.0986456140.

The spelling of 76819091 in words is "seventy-six million, eight hundred nineteen thousand, ninety-one".