23315645 has 16 divisors (see below), whose sum is σ = 28512000. Its totient is φ = 18301248.

The previous prime is 23315639. The next prime is 23315651. The reversal of 23315645 is 54651332.

It is an interprime number because it is at equal distance from previous prime (23315639) and next prime (23315651).

It is a cyclic number.

It is not a de Polignac number, because 23315645 - 2¹⁴ = 23299261 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97436 + ... + 97674.

It is an arithmetic number, because the mean of its divisors is an integer number (1782000).

Almost surely, 2^23315645 is an apocalyptic number.

It is an amenable number.

23315645 is a deficient number, since it is larger than the sum of its proper divisors (5196355).

23315645 is a wasteful number, since it uses less digits than its factorization.

23315645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532.

The product of its digits is 10800, while the sum is 29.

The square root of 23315645 is about 4828.6276518282. The cubic root of 23315645 is about 285.6817371851.

Adding to 23315645 its reverse (54651332), we get a palindrome (77966977).

The spelling of 23315645 in words is "twenty-three million, three hundred fifteen thousand, six hundred forty-five".