13721662 has 16 divisors (see below), whose sum is σ = 21568032. Its totient is φ = 6534880.

The previous prime is 13721627. The next prime is 13721671. The reversal of 13721662 is 26612731.

It is a self number, because there is not a number n which added to its sum of digits gives 13721662.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14112 + ... + 15052.

It is an arithmetic number, because the mean of its divisors is an integer number (1348002).

Almost surely, 2^13721662 is an apocalyptic number.

13721662 is a deficient number, since it is larger than the sum of its proper divisors (7846370).

13721662 is a wasteful number, since it uses less digits than its factorization.

13721662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1283.

The product of its digits is 3024, while the sum is 28.

The square root of 13721662 is about 3704.2761776088. The cubic root of 13721662 is about 239.4062987432.

The spelling of 13721662 in words is "thirteen million, seven hundred twenty-one thousand, six hundred sixty-two".