13641885 has 16 divisors (see below), whose sum is σ = 24252480. Its totient is φ = 7275600.

The previous prime is 13641853. The next prime is 13641893. The reversal of 13641885 is 58814631.

13641885 is a `hidden beast` number, since 1 + 3 + 641 + 8 + 8 + 5 = 666.

It is not a de Polignac number, because 13641885 - 2⁵ = 13641853 is a prime.

It is a super-2 number, since 2×13641885² = 372202052706450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50391 + ... + 50660.

It is an arithmetic number, because the mean of its divisors is an integer number (1515780).

Almost surely, 2^13641885 is an apocalyptic number.

13641885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13641885 is a deficient number, since it is larger than the sum of its proper divisors (10610595).

13641885 is a wasteful number, since it uses less digits than its factorization.

13641885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101065 (or 101059 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 13641885 is about 3693.4922498903. The cubic root of 13641885 is about 238.9414315850.

It can be divided in two parts, 136418 and 85, that added together give a triangular number (136503 = T₅₂₂).

The spelling of 13641885 in words is "thirteen million, six hundred forty-one thousand, eight hundred eighty-five".