23660987 has 4 divisors (see below), whose sum is σ = 27041136. Its totient is φ = 20280840.

The previous prime is 23660981. The next prime is 23660993. The reversal of 23660987 is 78906632.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (23660981) and next prime (23660993).

It is a cyclic number.

It is not a de Polignac number, because 23660987 - 2¹⁰ = 23659963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23660981) 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 3 ways as a sum of consecutive naturals, for example, 1690064 + ... + 1690077.

It is an arithmetic number, because the mean of its divisors is an integer number (6760284).

Almost surely, 2^23660987 is an apocalyptic number.

23660987 is a deficient number, since it is larger than the sum of its proper divisors (3380149).

23660987 is an equidigital number, since it uses as much as digits as its factorization.

23660987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3380148.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 23660987 is about 4864.2560582272. The cubic root of 23660987 is about 287.0852980084.

The spelling of 23660987 in words is "twenty-three million, six hundred sixty thousand, nine hundred eighty-seven".