13641855 has 8 divisors (see below), whose sum is σ = 21826992. Its totient is φ = 7275648.

The previous prime is 13641853. The next prime is 13641893. The reversal of 13641855 is 55814631.

13641855 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13641855 - 2¹ = 13641853 is a prime.

It is a super-2 number, since 2×13641855² = 372200415682050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13641853) 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, 454714 + ... + 454743.

It is an arithmetic number, because the mean of its divisors is an integer number (2728374).

Almost surely, 2^13641855 is an apocalyptic number.

13641855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13641855 is a deficient number, since it is larger than the sum of its proper divisors (8185137).

13641855 is an equidigital number, since it uses as much as digits as its factorization.

13641855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909465.

The product of its digits is 14400, while the sum is 33.

The square root of 13641855 is about 3693.4881886910. The cubic root of 13641855 is about 238.9412564321.

The spelling of 13641855 in words is "thirteen million, six hundred forty-one thousand, eight hundred fifty-five".