23661413 has 4 divisors (see below), whose sum is σ = 23677260. Its totient is φ = 23645568.

The previous prime is 23661359. The next prime is 23661431. The reversal of 23661413 is 31416632.

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

It can be written as a sum of positive squares in 2 ways, for example, as 19909444 + 3751969 = 4462^2 + 1937^2 .

It is a cyclic number.

It is not a de Polignac number, because 23661413 - 2¹⁰ = 23660389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23661713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5420 + ... + 8757.

It is an arithmetic number, because the mean of its divisors is an integer number (5919315).

Almost surely, 2^23661413 is an apocalyptic number.

It is an amenable number.

23661413 is a deficient number, since it is larger than the sum of its proper divisors (15847).

23661413 is a wasteful number, since it uses less digits than its factorization.

23661413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15846.

The product of its digits is 2592, while the sum is 26.

The square root of 23661413 is about 4864.2998468433. The cubic root of 23661413 is about 287.0870209233.

The spelling of 23661413 in words is "twenty-three million, six hundred sixty-one thousand, four hundred thirteen".