13867487 has 4 divisors (see below), whose sum is σ = 13890096. Its totient is φ = 13844880.

The previous prime is 13867439. The next prime is 13867493. The reversal of 13867487 is 78476831.

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 13867487 - 2¹² = 13863391 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 (13867417) 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, 10358 + ... + 11619.

It is an arithmetic number, because the mean of its divisors is an integer number (3472524).

Almost surely, 2^13867487 is an apocalyptic number.

13867487 is a deficient number, since it is larger than the sum of its proper divisors (22609).

13867487 is an equidigital number, since it uses as much as digits as its factorization.

13867487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22608.

The product of its digits is 225792, while the sum is 44.

The square root of 13867487 is about 3723.9074907951. The cubic root of 13867487 is about 240.2513974515.

The spelling of 13867487 in words is "thirteen million, eight hundred sixty-seven thousand, four hundred eighty-seven".