801080689 has 2 divisors, whose sum is σ = 801080690. Its totient is φ = 801080688.

The previous prime is 801080671. The next prime is 801080711. The reversal of 801080689 is 986080108.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 721728225 + 79352464 = 26865^2 + 8908^2 .

It is a cyclic number.

It is not a de Polignac number, because 801080689 - 2⁹ = 801080177 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (801080629) 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, 400540344 + 400540345.

It is an arithmetic number, because the mean of its divisors is an integer number (400540345).

Almost surely, 2^801080689 is an apocalyptic number.

It is an amenable number.

801080689 is a deficient number, since it is larger than the sum of its proper divisors (1).

801080689 is an equidigital number, since it uses as much as digits as its factorization.

801080689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 40.

The square root of 801080689 is about 28303.3688630877. The cubic root of 801080689 is about 928.7355881390.

The spelling of 801080689 in words is "eight hundred one million, eighty thousand, six hundred eighty-nine".