23966987 has 8 divisors (see below), whose sum is σ = 26241600. Its totient is φ = 21708360.

The previous prime is 23966977. The next prime is 23967007. The reversal of 23966987 is 78966932.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23966987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23966977) 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, 737 + ... + 6962.

It is an arithmetic number, because the mean of its divisors is an integer number (3280200).

Almost surely, 2^23966987 is an apocalyptic number.

23966987 is a deficient number, since it is larger than the sum of its proper divisors (2274613).

23966987 is a wasteful number, since it uses less digits than its factorization.

23966987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7993.

The product of its digits is 979776, while the sum is 50.

The square root of 23966987 is about 4895.6089508865. The cubic root of 23966987 is about 288.3175950810.

Subtracting 23966987 from its reverse (78966932), we obtain a palindrome (54999945).

The spelling of 23966987 in words is "twenty-three million, nine hundred sixty-six thousand, nine hundred eighty-seven".