13563946 has 16 divisors (see below), whose sum is σ = 22291200. Its totient is φ = 6138880.

The previous prime is 13563937. The next prime is 13563947. The reversal of 13563946 is 64936531.

It is not an unprimeable number, because it can be changed into a prime (13563947) 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 7 ways as a sum of consecutive naturals, for example, 4455 + ... + 6853.

It is an arithmetic number, because the mean of its divisors is an integer number (1393200).

Almost surely, 2^13563946 is an apocalyptic number.

13563946 is a deficient number, since it is larger than the sum of its proper divisors (8727254).

13563946 is a wasteful number, since it uses less digits than its factorization.

13563946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2669.

The product of its digits is 58320, while the sum is 37.

The square root of 13563946 is about 3682.9262821838. The cubic root of 13563946 is about 238.4855211131.

The spelling of 13563946 in words is "thirteen million, five hundred sixty-three thousand, nine hundred forty-six".