13721086 has 8 divisors (see below), whose sum is σ = 21019680. Its totient is φ = 6714528.

The previous prime is 13721063. The next prime is 13721093. The reversal of 13721086 is 68012731.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72891 + ... + 73078.

It is an arithmetic number, because the mean of its divisors is an integer number (2627460).

Almost surely, 2^13721086 is an apocalyptic number.

13721086 is a deficient number, since it is larger than the sum of its proper divisors (7298594).

13721086 is a wasteful number, since it uses less digits than its factorization.

13721086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146018.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 13721086 is about 3704.1984288102. The cubic root of 13721086 is about 239.4029488098.

The spelling of 13721086 in words is "thirteen million, seven hundred twenty-one thousand, eighty-six".