80745677 has 2 divisors, whose sum is σ = 80745678. Its totient is φ = 80745676.

The previous prime is 80745667. The next prime is 80745697. The reversal of 80745677 is 77654708.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44009956 + 36735721 = 6634^2 + 6061^2 .

It is a cyclic number.

It is not a de Polignac number, because 80745677 - 2⁴ = 80745661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80745667) 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, 40372838 + 40372839.

It is an arithmetic number, because the mean of its divisors is an integer number (40372839).

Almost surely, 2^80745677 is an apocalyptic number.

It is an amenable number.

80745677 is a deficient number, since it is larger than the sum of its proper divisors (1).

80745677 is an equidigital number, since it uses as much as digits as its factorization.

80745677 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 329280, while the sum is 44.

The square root of 80745677 is about 8985.8598364319. The cubic root of 80745677 is about 432.2215602314.

The spelling of 80745677 in words is "eighty million, seven hundred forty-five thousand, six hundred seventy-seven".