13863616 has 56 divisors (see below), whose sum is σ = 31221680. Its totient is φ = 6054912.

The previous prime is 13863613. The next prime is 13863623. The reversal of 13863616 is 61636831.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (13863611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15370 + ... + 16246.

It is an arithmetic number, because the mean of its divisors is an integer number (557530).

Almost surely, 2^13863616 is an apocalyptic number.

13863616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13863616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15610840).

13863616 is an abundant number, since it is smaller than the sum of its proper divisors (17358064).

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

13863616 is a wasteful number, since it uses less digits than its factorization.

13863616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 921 (or 911 counting only the distinct ones).

The product of its digits is 15552, while the sum is 34.

The square root of 13863616 is about 3723.3877047656. The cubic root of 13863616 is about 240.2290406081.

The spelling of 13863616 in words is "thirteen million, eight hundred sixty-three thousand, six hundred sixteen".