14678987 has 4 divisors (see below), whose sum is σ = 14699136. Its totient is φ = 14658840.

The previous prime is 14678981. The next prime is 14679013. The reversal of 14678987 is 78987641.

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

It is a cyclic number.

It is not a de Polignac number, because 14678987 - 2⁴ = 14678971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14678981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8939 + ... + 10452.

It is an arithmetic number, because the mean of its divisors is an integer number (3674784).

Almost surely, 2^14678987 is an apocalyptic number.

14678987 is a deficient number, since it is larger than the sum of its proper divisors (20149).

14678987 is an equidigital number, since it uses as much as digits as its factorization.

14678987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20148.

The product of its digits is 677376, while the sum is 50.

The square root of 14678987 is about 3831.3166144290. The cubic root of 14678987 is about 244.8492033308.

The spelling of 14678987 in words is "fourteen million, six hundred seventy-eight thousand, nine hundred eighty-seven".