23685987 has 16 divisors (see below), whose sum is σ = 34842528. Its totient is φ = 14219520.

The previous prime is 23685941. The next prime is 23685997. The reversal of 23685987 is 78958632.

It is not a de Polignac number, because 23685987 - 2⁸ = 23685731 is a prime.

It is a super-2 number, since 2×23685987² = 1122051960328338, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23685917) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5808 + ... + 9005.

It is an arithmetic number, because the mean of its divisors is an integer number (2177658).

Almost surely, 2^23685987 is an apocalyptic number.

23685987 is a deficient number, since it is larger than the sum of its proper divisors (11156541).

23685987 is a wasteful number, since it uses less digits than its factorization.

23685987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14870.

The product of its digits is 725760, while the sum is 48.

The square root of 23685987 is about 4866.8251458215. The cubic root of 23685987 is about 287.1863730561.

The spelling of 23685987 in words is "twenty-three million, six hundred eighty-five thousand, nine hundred eighty-seven".