697601 has 2 divisors, whose sum is σ = 697602. Its totient is φ = 697600.

The previous prime is 697591. The next prime is 697603. The reversal of 697601 is 106796.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 361201 + 336400 = 601^2 + 580^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-697601 is a prime.

Together with 697603, it forms a pair of twin primes.

It is a Chen prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 697601.

It is not a weakly prime, because it can be changed into another prime (697603) 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, 348800 + 348801.

It is an arithmetic number, because the mean of its divisors is an integer number (348801).

2⁶⁹⁷⁶⁰¹ is an apocalyptic number.

It is an amenable number.

697601 is a deficient number, since it is larger than the sum of its proper divisors (1).

697601 is an equidigital number, since it uses as much as digits as its factorization.

697601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 697601 is about 835.2251193541. The cubic root of 697601 is about 88.6888516167.

The spelling of 697601 in words is "six hundred ninety-seven thousand, six hundred one".