697966673 has 2 divisors, whose sum is σ = 697966674. Its totient is φ = 697966672.

The previous prime is 697966613. The next prime is 697966679. The reversal of 697966673 is 376669796.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 693374224 + 4592449 = 26332^2 + 2143^2 .

It is a cyclic number.

It is not a de Polignac number, because 697966673 - 2⁶ = 697966609 is a prime.

It is not a weakly prime, because it can be changed into another prime (697966679) 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, 348983336 + 348983337.

It is an arithmetic number, because the mean of its divisors is an integer number (348983337).

Almost surely, 2^697966673 is an apocalyptic number.

It is an amenable number.

697966673 is a deficient number, since it is larger than the sum of its proper divisors (1).

697966673 is an equidigital number, since it uses as much as digits as its factorization.

697966673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15431472, while the sum is 59.

The square root of 697966673 is about 26419.0588969403. The cubic root of 697966673 is about 887.0434540826.

The spelling of 697966673 in words is "six hundred ninety-seven million, nine hundred sixty-six thousand, six hundred seventy-three".