13167987 has 16 divisors (see below), whose sum is σ = 20117760. Its totient is φ = 7504992.

The previous prime is 13167977. The next prime is 13167991. The reversal of 13167987 is 78976131.

It is not a de Polignac number, because 13167987 - 2⁴ = 13167971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13167907) 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, 12493 + ... + 13505.

It is an arithmetic number, because the mean of its divisors is an integer number (1257360).

Almost surely, 2^13167987 is an apocalyptic number.

13167987 is a deficient number, since it is larger than the sum of its proper divisors (6949773).

13167987 is a wasteful number, since it uses less digits than its factorization.

13167987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1642.

The product of its digits is 63504, while the sum is 42.

The square root of 13167987 is about 3628.7721063743. The cubic root of 13167987 is about 236.1419415684.

The spelling of 13167987 in words is "thirteen million, one hundred sixty-seven thousand, nine hundred eighty-seven".