697261 has 2 divisors, whose sum is σ = 697262. Its totient is φ = 697260.

The previous prime is 697259. The next prime is 697267. The reversal of 697261 is 162796.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 697225 + 36 = 835^2 + 6^2 .

It is a cyclic number.

It is not a de Polignac number, because 697261 - 2¹ = 697259 is a prime.

Together with 697259, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (697267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348630 + 348631.

It is an arithmetic number, because the mean of its divisors is an integer number (348631).

2⁶⁹⁷²⁶¹ is an apocalyptic number.

It is an amenable number.

697261 is a deficient number, since it is larger than the sum of its proper divisors (1).

697261 is an equidigital number, since it uses as much as digits as its factorization.

697261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 31.

The square root of 697261 is about 835.0215566080. The cubic root of 697261 is about 88.6744407478.

The spelling of 697261 in words is "six hundred ninety-seven thousand, two hundred sixty-one".