697747797 has 16 divisors (see below), whose sum is σ = 1047863680. Its totient is φ = 458791776.

The previous prime is 697747793. The next prime is 697747823. The reversal of 697747797 is 797747796.

697747797 is a `hidden beast` number, since 6 + 9 + 77 + 477 + 97 = 666.

697747797 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 697747797 - 2² = 697747793 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (697747793) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 175033 + ... + 178974.

It is an arithmetic number, because the mean of its divisors is an integer number (65491480).

Almost surely, 2^697747797 is an apocalyptic number.

It is an amenable number.

697747797 is a deficient number, since it is larger than the sum of its proper divisors (350115883).

697747797 is a wasteful number, since it uses less digits than its factorization.

697747797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354089 (or 354083 counting only the distinct ones).

The product of its digits is 32672808, while the sum is 63.

The square root of 697747797 is about 26414.9161838534. The cubic root of 697747797 is about 886.9507214690.

Subtracting 697747797 from its reverse (797747796), we obtain a palindrome (99999999).

The spelling of 697747797 in words is "six hundred ninety-seven million, seven hundred forty-seven thousand, seven hundred ninety-seven".