23563645 has 8 divisors (see below), whose sum is σ = 32315904. Its totient is φ = 16157904.

The previous prime is 23563637. The next prime is 23563663. The reversal of 23563645 is 54636532.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23563645 - 2³ = 23563637 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23563645.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 336589 + ... + 336658.

It is an arithmetic number, because the mean of its divisors is an integer number (4039488).

Almost surely, 2^23563645 is an apocalyptic number.

It is an amenable number.

23563645 is a deficient number, since it is larger than the sum of its proper divisors (8752259).

23563645 is an equidigital number, since it uses as much as digits as its factorization.

23563645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673259.

The product of its digits is 64800, while the sum is 34.

The square root of 23563645 is about 4854.2398993045. The cubic root of 23563645 is about 286.6910644159.

The spelling of 23563645 in words is "twenty-three million, five hundred sixty-three thousand, six hundred forty-five".