13645722 has 8 divisors (see below), whose sum is σ = 27291456. Its totient is φ = 4548572.

The previous prime is 13645699. The next prime is 13645727. The reversal of 13645722 is 22754631.

13645722 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 a sphenic number, since it is the product of 3 distinct primes.

13645722 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 13645722.

It is not an unprimeable number, because it can be changed into a prime (13645727) 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, 1137138 + ... + 1137149.

It is an arithmetic number, because the mean of its divisors is an integer number (3411432).

Almost surely, 2^13645722 is an apocalyptic number.

13645722 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13645722 is a wasteful number, since it uses less digits than its factorization.

13645722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2274292.

The product of its digits is 10080, while the sum is 30.

The square root of 13645722 is about 3694.0116404798. The cubic root of 13645722 is about 238.9638315278.

The spelling of 13645722 in words is "thirteen million, six hundred forty-five thousand, seven hundred twenty-two".