697894663 has 2 divisors, whose sum is σ = 697894664. Its totient is φ = 697894662.

The previous prime is 697894621. The next prime is 697894679. The reversal of 697894663 is 366498796.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 697894663 - 2⁹ = 697894151 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 697894598 and 697894607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (697894163) 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, 348947331 + 348947332.

It is an arithmetic number, because the mean of its divisors is an integer number (348947332).

Almost surely, 2^697894663 is an apocalyptic number.

697894663 is a deficient number, since it is larger than the sum of its proper divisors (1).

697894663 is an equidigital number, since it uses as much as digits as its factorization.

697894663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11757312, while the sum is 58.

The square root of 697894663 is about 26417.6960199030. The cubic root of 697894663 is about 887.0129472793.

The spelling of 697894663 in words is "six hundred ninety-seven million, eight hundred ninety-four thousand, six hundred sixty-three".