799657 has 2 divisors, whose sum is σ = 799658. Its totient is φ = 799656.

The previous prime is 799651. The next prime is 799661. The reversal of 799657 is 756997.

799657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 793881 + 5776 = 891^2 + 76^2 .

It is a cyclic number.

It is not a de Polignac number, because 799657 - 2⁷ = 799529 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (799651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 399828 + 399829.

It is an arithmetic number, because the mean of its divisors is an integer number (399829).

2⁷⁹⁹⁶⁵⁷ is an apocalyptic number.

It is an amenable number.

799657 is a deficient number, since it is larger than the sum of its proper divisors (1).

799657 is an equidigital number, since it uses as much as digits as its factorization.

799657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 119070, while the sum is 43.

The square root of 799657 is about 894.2354276140. The cubic root of 799657 is about 92.8185075676.

The spelling of 799657 in words is "seven hundred ninety-nine thousand, six hundred fifty-seven".