23615961 has 8 divisors (see below), whose sum is σ = 31715040. Its totient is φ = 15630432.

The previous prime is 23615951. The next prime is 23615981. The reversal of 23615961 is 16951632.

It is a happy number.

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

It is not a de Polignac number, because 23615961 - 2⁷ = 23615833 is a prime.

It is a super-2 number, since 2×23615961² = 1115427227907042, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23615951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27900 + ... + 28733.

It is an arithmetic number, because the mean of its divisors is an integer number (3964380).

Almost surely, 2^23615961 is an apocalyptic number.

It is an amenable number.

23615961 is a deficient number, since it is larger than the sum of its proper divisors (8099079).

23615961 is a wasteful number, since it uses less digits than its factorization.

23615961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56775.

The product of its digits is 9720, while the sum is 33.

The square root of 23615961 is about 4859.6256028628. The cubic root of 23615961 is about 286.9030780706.

The spelling of 23615961 in words is "twenty-three million, six hundred fifteen thousand, nine hundred sixty-one".