697699441 has 2 divisors, whose sum is σ = 697699442. Its totient is φ = 697699440.

The previous prime is 697699393. The next prime is 697699459. The reversal of 697699441 is 144996796.

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., 696748816 + 950625 = 26396^2 + 975^2 .

It is a cyclic number.

It is not a de Polignac number, because 697699441 - 2¹¹ = 697697393 is a prime.

It is not a weakly prime, because it can be changed into another prime (697499441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348849720 + 348849721.

It is an arithmetic number, because the mean of its divisors is an integer number (348849721).

Almost surely, 2^697699441 is an apocalyptic number.

It is an amenable number.

697699441 is a deficient number, since it is larger than the sum of its proper divisors (1).

697699441 is an equidigital number, since it uses as much as digits as its factorization.

697699441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2939328, while the sum is 55.

The square root of 697699441 is about 26414.0008518210. Note that the first 3 decimals coincide. The cubic root of 697699441 is about 886.9302315536.

The spelling of 697699441 in words is "six hundred ninety-seven million, six hundred ninety-nine thousand, four hundred forty-one".