13855065 has 32 divisors (see below), whose sum is σ = 25559040. Its totient is φ = 6277824.

The previous prime is 13855033. The next prime is 13855067. The reversal of 13855065 is 56055831.

It is not a de Polignac number, because 13855065 - 2⁵ = 13855033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13855067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12816 + ... + 13854.

It is an arithmetic number, because the mean of its divisors is an integer number (798720).

Almost surely, 2^13855065 is an apocalyptic number.

13855065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13855065 is a deficient number, since it is larger than the sum of its proper divisors (11703975).

13855065 is a wasteful number, since it uses less digits than its factorization.

13855065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1181.

The product of its (nonzero) digits is 18000, while the sum is 33.

The square root of 13855065 is about 3722.2392454005. The cubic root of 13855065 is about 240.1796398117.

The spelling of 13855065 in words is "thirteen million, eight hundred fifty-five thousand, sixty-five".