23661617 has 8 divisors (see below), whose sum is σ = 27141696. Its totient is φ = 20206512.

The previous prime is 23661601. The next prime is 23661619. The reversal of 23661617 is 71616632.

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

It is a cyclic number.

It is not a de Polignac number, because 23661617 - 2⁴ = 23661601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23661619) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4163 + ... + 8040.

It is an arithmetic number, because the mean of its divisors is an integer number (3392712).

Almost surely, 2^23661617 is an apocalyptic number.

It is an amenable number.

23661617 is a deficient number, since it is larger than the sum of its proper divisors (3480079).

23661617 is a wasteful number, since it uses less digits than its factorization.

23661617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12487.

The product of its digits is 9072, while the sum is 32.

The square root of 23661617 is about 4864.3208159002. The cubic root of 23661617 is about 287.0878459738.

The spelling of 23661617 in words is "twenty-three million, six hundred sixty-one thousand, six hundred seventeen".