13855660 has 96 divisors (see below), whose sum is σ = 37481472. Its totient is φ = 4181760.

The previous prime is 13855657. The next prime is 13855661. The reversal of 13855660 is 6655831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13855661) 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, 41695 + ... + 42025.

It is an arithmetic number, because the mean of its divisors is an integer number (390432).

Almost surely, 2^13855660 is an apocalyptic number.

13855660 is a gapful number since it is divisible by the number (10) 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 13855660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18740736).

13855660 is an abundant number, since it is smaller than the sum of its proper divisors (23625812).

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

13855660 is a wasteful number, since it uses less digits than its factorization.

13855660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383 (or 381 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 13855660 is about 3722.3191695501. The cubic root of 13855660 is about 240.1830779008.

The spelling of 13855660 in words is "thirteen million, eight hundred fifty-five thousand, six hundred sixty".