13886687 has 4 divisors (see below), whose sum is σ = 14490480. Its totient is φ = 13282896.

The previous prime is 13886681. The next prime is 13886693. The reversal of 13886687 is 78668831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78668831 = 277 ⋅284003.

It is an interprime number because it is at equal distance from previous prime (13886681) and next prime (13886693).

It is a cyclic number.

It is not a de Polignac number, because 13886687 - 2⁶ = 13886623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13886681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 301862 + ... + 301907.

It is an arithmetic number, because the mean of its divisors is an integer number (3622620).

Almost surely, 2^13886687 is an apocalyptic number.

13886687 is a deficient number, since it is larger than the sum of its proper divisors (603793).

13886687 is an equidigital number, since it uses as much as digits as its factorization.

13886687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603792.

The product of its digits is 387072, while the sum is 47.

The square root of 13886687 is about 3726.4845363962. The cubic root of 13886687 is about 240.3622250200.

The spelling of 13886687 in words is "thirteen million, eight hundred eighty-six thousand, six hundred eighty-seven".