800079677 has 2 divisors, whose sum is σ = 800079678. Its totient is φ = 800079676.

The previous prime is 800079661. The next prime is 800079697. The reversal of 800079677 is 776970008.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 727165156 + 72914521 = 26966^2 + 8539^2 .

It is a cyclic number.

It is not a de Polignac number, because 800079677 - 2⁴ = 800079661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (800079697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 400039838 + 400039839.

It is an arithmetic number, because the mean of its divisors is an integer number (400039839).

Almost surely, 2^800079677 is an apocalyptic number.

It is an amenable number.

800079677 is a deficient number, since it is larger than the sum of its proper divisors (1).

800079677 is an equidigital number, since it uses as much as digits as its factorization.

800079677 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 148176, while the sum is 44.

The square root of 800079677 is about 28285.6797160683. The cubic root of 800079677 is about 928.3485846889.

The spelling of 800079677 in words is "eight hundred million, seventy-nine thousand, six hundred seventy-seven".