704657 has 2 divisors, whose sum is σ = 704658. Its totient is φ = 704656.

The previous prime is 704647. The next prime is 704663. The reversal of 704657 is 756407.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 654481 + 50176 = 809^2 + 224^2 .

It is a cyclic number.

It is not a de Polignac number, because 704657 - 2⁶ = 704593 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (704617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 352328 + 352329.

It is an arithmetic number, because the mean of its divisors is an integer number (352329).

2⁷⁰⁴⁶⁵⁷ is an apocalyptic number.

It is an amenable number.

704657 is a deficient number, since it is larger than the sum of its proper divisors (1).

704657 is an equidigital number, since it uses as much as digits as its factorization.

704657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 704657 is about 839.4385028101. The cubic root of 704657 is about 88.9868684072.

The spelling of 704657 in words is "seven hundred four thousand, six hundred fifty-seven".