697009 has 2 divisors, whose sum is σ = 697010. Its totient is φ = 697008.

The previous prime is 696991. The next prime is 697013. The reversal of 697009 is 900796.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 680625 + 16384 = 825^2 + 128^2 .

It is a cyclic number.

It is not a de Polignac number, because 697009 - 2⁹ = 696497 is a prime.

It is not a weakly prime, because it can be changed into another prime (697019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348504 + 348505.

It is an arithmetic number, because the mean of its divisors is an integer number (348505).

2⁶⁹⁷⁰⁰⁹ is an apocalyptic number.

It is an amenable number.

697009 is a deficient number, since it is larger than the sum of its proper divisors (1).

697009 is an equidigital number, since it uses as much as digits as its factorization.

697009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3402, while the sum is 31.

The square root of 697009 is about 834.8706486636. The cubic root of 697009 is about 88.6637567276.

The spelling of 697009 in words is "six hundred ninety-seven thousand, nine".