13868655 has 32 divisors (see below), whose sum is σ = 23569920. Its totient is φ = 6948480.

The previous prime is 13868653. The next prime is 13868671. The reversal of 13868655 is 55686831.

It is not a de Polignac number, because 13868655 - 2¹ = 13868653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13868653) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20716 + ... + 21374.

It is an arithmetic number, because the mean of its divisors is an integer number (736560).

Almost surely, 2^13868655 is an apocalyptic number.

13868655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13868655 is a deficient number, since it is larger than the sum of its proper divisors (9701265).

13868655 is a wasteful number, since it uses less digits than its factorization.

13868655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751.

The product of its digits is 172800, while the sum is 42.

The square root of 13868655 is about 3724.0643120118. The cubic root of 13868655 is about 240.2581423831.

The spelling of 13868655 in words is "thirteen million, eight hundred sixty-eight thousand, six hundred fifty-five".