23604985 has 16 divisors (see below), whose sum is σ = 29503440. Its totient is φ = 18108160.

The previous prime is 23604983. The next prime is 23604989. The reversal of 23604985 is 58940632.

It can be written as a sum of positive squares in 8 ways, for example, as 1354896 + 22250089 = 1164^2 + 4717^2 .

It is not a de Polignac number, because 23604985 - 2¹ = 23604983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23604983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24615 + ... + 25555.

It is an arithmetic number, because the mean of its divisors is an integer number (1843965).

Almost surely, 2^23604985 is an apocalyptic number.

It is an amenable number.

23604985 is a deficient number, since it is larger than the sum of its proper divisors (5898455).

23604985 is a wasteful number, since it uses less digits than its factorization.

23604985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1148.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 23604985 is about 4858.4961665108. The cubic root of 23604985 is about 286.8586231619.

The spelling of 23604985 in words is "twenty-three million, six hundred four thousand, nine hundred eighty-five".