13806646 has 8 divisors (see below), whose sum is σ = 23668560. Its totient is φ = 5917128.

The previous prime is 13806643. The next prime is 13806671. The reversal of 13806646 is 64660831.

13806646 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 a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13806643) 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, 493081 + ... + 493108.

It is an arithmetic number, because the mean of its divisors is an integer number (2958570).

Almost surely, 2^13806646 is an apocalyptic number.

13806646 is a deficient number, since it is larger than the sum of its proper divisors (9861914).

13806646 is an equidigital number, since it uses as much as digits as its factorization.

13806646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 986198.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 13806646 is about 3715.7295380584. The cubic root of 13806646 is about 239.8995297056.

The spelling of 13806646 in words is "thirteen million, eight hundred six thousand, six hundred forty-six".