697952320497 has 6 divisors (see below), whose sum is σ = 1008153351842. Its totient is φ = 465301546992.

The previous prime is 697952320493. The next prime is 697952320511. The reversal of 697952320497 is 794023259796.

697952320497 is a `hidden beast` number, since 6 + 9 + 79 + 52 + 3 + 20 + 497 = 666.

It can be written as a sum of positive squares in only one way, i.e., 399941143281 + 298011177216 = 632409^2 + 545904^2 .

It is not a de Polignac number, because 697952320497 - 2² = 697952320493 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (697952320493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38775128908 + ... + 38775128925.

Almost surely, 2^697952320497 is an apocalyptic number.

It is an amenable number.

697952320497 is a deficient number, since it is larger than the sum of its proper divisors (310201031345).

697952320497 is a wasteful number, since it uses less digits than its factorization.

697952320497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77550257839 (or 77550257836 counting only the distinct ones).

The product of its (nonzero) digits is 51438240, while the sum is 63.

The spelling of 697952320497 in words is "six hundred ninety-seven billion, nine hundred fifty-two million, three hundred twenty thousand, four hundred ninety-seven".