13221694 has 8 divisors (see below), whose sum is σ = 19851048. Its totient is φ = 6604680.

The previous prime is 13221679. The next prime is 13221697. The reversal of 13221694 is 49612231.

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 (13221697) 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, 369 + ... + 5155.

It is an arithmetic number, because the mean of its divisors is an integer number (2481381).

Almost surely, 2^13221694 is an apocalyptic number.

13221694 is a deficient number, since it is larger than the sum of its proper divisors (6629354).

13221694 is a wasteful number, since it uses less digits than its factorization.

13221694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6170.

The product of its digits is 2592, while the sum is 28.

The square root of 13221694 is about 3636.1647377422. The cubic root of 13221694 is about 236.4625492147.

The spelling of 13221694 in words is "thirteen million, two hundred twenty-one thousand, six hundred ninety-four".