13144687 has 4 divisors (see below), whose sum is σ = 13152976. Its totient is φ = 13136400.

The previous prime is 13144679. The next prime is 13144693. The reversal of 13144687 is 78644131.

It is a happy number.

13144687 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 13144687 - 2³ = 13144679 is a prime.

It is a Duffinian number.

It is a zygodrome in base 5.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13144697) 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, 939 + ... + 5212.

It is an arithmetic number, because the mean of its divisors is an integer number (3288244).

Almost surely, 2^13144687 is an apocalyptic number.

13144687 is a deficient number, since it is larger than the sum of its proper divisors (8289).

13144687 is an equidigital number, since it uses as much as digits as its factorization.

13144687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8288.

The product of its digits is 16128, while the sum is 34.

The square root of 13144687 is about 3625.5602325710. The cubic root of 13144687 is about 236.0025794509.

It can be divided in two parts, 13144 and 687, that added together give a palindrome (13831).

The spelling of 13144687 in words is "thirteen million, one hundred forty-four thousand, six hundred eighty-seven".