23997697 has 4 divisors (see below), whose sum is σ = 24210180. Its totient is φ = 23785216.

The previous prime is 23997691. The next prime is 23997709. The reversal of 23997697 is 79679932.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6558721 + 17438976 = 2561^2 + 4176^2 .

It is a cyclic number.

It is not a de Polignac number, because 23997697 - 2¹¹ = 23995649 is a prime.

It is a super-2 number, since 2×23997697² = 1151778922607618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23997691) 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 in 3 ways as a sum of consecutive naturals, for example, 106072 + ... + 106297.

It is an arithmetic number, because the mean of its divisors is an integer number (6052545).

Almost surely, 2^23997697 is an apocalyptic number.

It is an amenable number.

23997697 is a deficient number, since it is larger than the sum of its proper divisors (212483).

23997697 is a wasteful number, since it uses less digits than its factorization.

23997697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212482.

The product of its digits is 1285956, while the sum is 52.

The square root of 23997697 is about 4898.7444309741. The cubic root of 23997697 is about 288.4406873753.

The spelling of 23997697 in words is "twenty-three million, nine hundred ninety-seven thousand, six hundred ninety-seven".