13729646 has 8 divisors (see below), whose sum is σ = 23536560. Its totient is φ = 5884128.

The previous prime is 13729633. The next prime is 13729649. The reversal of 13729646 is 64692731.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13729649) 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, 490331 + ... + 490358.

It is an arithmetic number, because the mean of its divisors is an integer number (2942070).

Almost surely, 2^13729646 is an apocalyptic number.

13729646 is a deficient number, since it is larger than the sum of its proper divisors (9806914).

13729646 is an equidigital number, since it uses as much as digits as its factorization.

13729646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 980698.

The product of its digits is 54432, while the sum is 38.

The square root of 13729646 is about 3705.3536943185. The cubic root of 13729646 is about 239.4527228883.

The spelling of 13729646 in words is "thirteen million, seven hundred twenty-nine thousand, six hundred forty-six".