697217 has 2 divisors, whose sum is σ = 697218. Its totient is φ = 697216.

The previous prime is 697211. The next prime is 697259. The reversal of 697217 is 712796.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 495616 + 201601 = 704^2 + 449^2 .

It is a cyclic number.

It is not a de Polignac number, because 697217 - 2⁴ = 697201 is a prime.

It is a super-2 number, since 2×697217² = 972223090178, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (697211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348608 + 348609.

It is an arithmetic number, because the mean of its divisors is an integer number (348609).

2⁶⁹⁷²¹⁷ is an apocalyptic number.

It is an amenable number.

697217 is a deficient number, since it is larger than the sum of its proper divisors (1).

697217 is an equidigital number, since it uses as much as digits as its factorization.

697217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5292, while the sum is 32.

The square root of 697217 is about 834.9952095671. The cubic root of 697217 is about 88.6725754694.

The spelling of 697217 in words is "six hundred ninety-seven thousand, two hundred seventeen".