80674691 has 2 divisors, whose sum is σ = 80674692. Its totient is φ = 80674690.

The previous prime is 80674687. The next prime is 80674739. The reversal of 80674691 is 19647608.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 80674691 - 2² = 80674687 is a prime.

It is not a weakly prime, because it can be changed into another prime (80674621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40337345 + 40337346.

It is an arithmetic number, because the mean of its divisors is an integer number (40337346).

Almost surely, 2^80674691 is an apocalyptic number.

80674691 is a deficient number, since it is larger than the sum of its proper divisors (1).

80674691 is an equidigital number, since it uses as much as digits as its factorization.

80674691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 80674691 is about 8981.9090955097. The cubic root of 80674691 is about 432.0948633551.

The spelling of 80674691 in words is "eighty million, six hundred seventy-four thousand, six hundred ninety-one".