23897617 has 4 divisors (see below), whose sum is σ = 23907636. Its totient is φ = 23887600.

The previous prime is 23897591. The next prime is 23897633. The reversal of 23897617 is 71679832.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 17338896 + 6558721 = 4164^2 + 2561^2 .

It is a cyclic number.

It is not a de Polignac number, because 23897617 - 2¹⁵ = 23864849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23897417) 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, 867 + ... + 6967.

It is an arithmetic number, because the mean of its divisors is an integer number (5976909).

Almost surely, 2^23897617 is an apocalyptic number.

It is an amenable number.

23897617 is a deficient number, since it is larger than the sum of its proper divisors (10019).

23897617 is an equidigital number, since it uses as much as digits as its factorization.

23897617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10018.

The product of its digits is 127008, while the sum is 43.

The square root of 23897617 is about 4888.5188963530. The cubic root of 23897617 is about 288.0391576451.

The spelling of 23897617 in words is "twenty-three million, eight hundred ninety-seven thousand, six hundred seventeen".