76630891 has 2 divisors, whose sum is σ = 76630892. Its totient is φ = 76630890.

The previous prime is 76630831. The next prime is 76630901. The reversal of 76630891 is 19803667.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 76630891 - 2¹³ = 76622699 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (76630831) by changing a digit.

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38315445 + 38315446.

It is an arithmetic number, because the mean of its divisors is an integer number (38315446).

Almost surely, 2^76630891 is an apocalyptic number.

76630891 is a deficient number, since it is larger than the sum of its proper divisors (1).

76630891 is an equidigital number, since it uses as much as digits as its factorization.

76630891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 76630891 is about 8753.9071847947. The cubic root of 76630891 is about 424.7512103301.

The spelling of 76630891 in words is "seventy-six million, six hundred thirty thousand, eight hundred ninety-one".