13806705 has 24 divisors (see below), whose sum is σ = 24284736. Its totient is φ = 6693280.

The previous prime is 13806691. The next prime is 13806713. The reversal of 13806705 is 50760831.

13806705 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13806705 - 2⁷ = 13806577 is a prime.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1989 + ... + 5618.

It is an arithmetic number, because the mean of its divisors is an integer number (1011864).

Almost surely, 2^13806705 is an apocalyptic number.

13806705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13806705 is a deficient number, since it is larger than the sum of its proper divisors (10478031).

13806705 is a wasteful number, since it uses less digits than its factorization.

13806705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7637 (or 7626 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 13806705 is about 3715.7374772715. The cubic root of 13806705 is about 239.8998714264.

The spelling of 13806705 in words is "thirteen million, eight hundred six thousand, seven hundred five".