23475645 has 24 divisors (see below), whose sum is σ = 42096600. Its totient is φ = 12087936.

The previous prime is 23475631. The next prime is 23475707. The reversal of 23475645 is 54657432.

23475645 is a `hidden beast` number, since 2 + 3 + 4 + 7 + 5 + 645 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 4968441 + 18507204 = 2229^2 + 4302^2 .

It is not a de Polignac number, because 23475645 - 2⁴ = 23475629 is a prime.

It is a super-2 number, since 2×23475645² = 1102211816332050, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7690 + ... + 10299.

It is an arithmetic number, because the mean of its divisors is an integer number (1754025).

Almost surely, 2^23475645 is an apocalyptic number.

It is an amenable number.

23475645 is a deficient number, since it is larger than the sum of its proper divisors (18620955).

23475645 is a wasteful number, since it uses less digits than its factorization.

23475645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18029 (or 18026 counting only the distinct ones).

The product of its digits is 100800, while the sum is 36.

The square root of 23475645 is about 4845.1671797782. The cubic root of 23475645 is about 286.3337302652. Note that the first 3 decimals are identical.

The spelling of 23475645 in words is "twenty-three million, four hundred seventy-five thousand, six hundred forty-five".