13855705 has 4 divisors (see below), whose sum is σ = 16626852. Its totient is φ = 11084560.

The previous prime is 13855703. The next prime is 13855717. The reversal of 13855705 is 50755831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50755831 = 7 ⋅7250833.

It can be written as a sum of positive squares in 2 ways, for example, as 2383936 + 11471769 = 1544^2 + 3387^2 .

It is not a de Polignac number, because 13855705 - 2¹ = 13855703 is a prime.

It is a super-2 number, since 2×13855705² = 383961122094050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13855703) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1385566 + ... + 1385575.

It is an arithmetic number, because the mean of its divisors is an integer number (4156713).

Almost surely, 2^13855705 is an apocalyptic number.

It is an amenable number.

13855705 is a deficient number, since it is larger than the sum of its proper divisors (2771147).

13855705 is an equidigital number, since it uses as much as digits as its factorization.

13855705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2771146.

The product of its (nonzero) digits is 21000, while the sum is 34.

The square root of 13855705 is about 3722.3252141639. The cubic root of 13855705 is about 240.1833379203.

The spelling of 13855705 in words is "thirteen million, eight hundred fifty-five thousand, seven hundred five".