23604505 has 4 divisors (see below), whose sum is σ = 28325412. Its totient is φ = 18883600.

The previous prime is 23604487. The next prime is 23604523. The reversal of 23604505 is 50540632.

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

It is an interprime number because it is at equal distance from previous prime (23604487) and next prime (23604523).

It can be written as a sum of positive squares in 2 ways, for example, as 10673289 + 12931216 = 3267^2 + 3596^2 .

It is not a de Polignac number, because 23604505 - 2⁵ = 23604473 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 23604505.

It is an unprimeable number.

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, 2360446 + ... + 2360455.

It is an arithmetic number, because the mean of its divisors is an integer number (7081353).

Almost surely, 2^23604505 is an apocalyptic number.

It is an amenable number.

23604505 is a deficient number, since it is larger than the sum of its proper divisors (4720907).

23604505 is an equidigital number, since it uses as much as digits as its factorization.

23604505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4720906.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 23604505 is about 4858.4467682583. The cubic root of 23604505 is about 286.8566787552.

The spelling of 23604505 in words is "twenty-three million, six hundred four thousand, five hundred five".