23986561 has 8 divisors (see below), whose sum is σ = 24615360. Its totient is φ = 23361072.

The previous prime is 23986553. The next prime is 23986579. The reversal of 23986561 is 16568932.

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 23986561 - 2³ = 23986553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23926561) 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, 21075 + ... + 22183.

It is an arithmetic number, because the mean of its divisors is an integer number (3076920).

Almost surely, 2^23986561 is an apocalyptic number.

It is an amenable number.

23986561 is a deficient number, since it is larger than the sum of its proper divisors (628799).

23986561 is a wasteful number, since it uses less digits than its factorization.

23986561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1655.

The product of its digits is 77760, while the sum is 40.

The square root of 23986561 is about 4897.6076813073. The cubic root of 23986561 is about 288.3960640313.

The spelling of 23986561 in words is "twenty-three million, nine hundred eighty-six thousand, five hundred sixty-one".