13906646 has 32 divisors (see below), whose sum is σ = 24167808. Its totient is φ = 5944320.

The previous prime is 13906643. The next prime is 13906649. The reversal of 13906646 is 64660931.

13906646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (13906643) and next prime (13906649).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13906643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32051 + ... + 32481.

It is an arithmetic number, because the mean of its divisors is an integer number (755244).

Almost surely, 2^13906646 is an apocalyptic number.

13906646 is a deficient number, since it is larger than the sum of its proper divisors (10261162).

13906646 is a wasteful number, since it uses less digits than its factorization.

13906646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 13906646 is about 3729.1615679667. The cubic root of 13906646 is about 240.4773255018.

The spelling of 13906646 in words is "thirteen million, nine hundred six thousand, six hundred forty-six".