13871564 has 12 divisors (see below), whose sum is σ = 27743184. Its totient is φ = 5944944.

The previous prime is 13871551. The next prime is 13871573. The reversal of 13871564 is 46517831.

13871564 is an admirable number.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 247679 + ... + 247734.

It is an arithmetic number, because the mean of its divisors is an integer number (2311932).

Almost surely, 2^13871564 is an apocalyptic number.

13871564 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

13871564 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13871564 is a wasteful number, since it uses less digits than its factorization.

13871564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495424 (or 495422 counting only the distinct ones).

The product of its digits is 20160, while the sum is 35.

The square root of 13871564 is about 3724.4548594392. The cubic root of 13871564 is about 240.2749395437.

The spelling of 13871564 in words is "thirteen million, eight hundred seventy-one thousand, five hundred sixty-four".