13971206 has 4 divisors (see below), whose sum is σ = 20956812. Its totient is φ = 6985602.

The previous prime is 13971197. The next prime is 13971227. The reversal of 13971206 is 60217931.

13971206 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60217931 = 43 ⋅1400417.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3492800 + ... + 3492803.

It is an arithmetic number, because the mean of its divisors is an integer number (5239203).

Almost surely, 2^13971206 is an apocalyptic number.

13971206 is a deficient number, since it is larger than the sum of its proper divisors (6985606).

13971206 is an equidigital number, since it uses as much as digits as its factorization.

13971206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6985605.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 13971206 is about 3737.8076462012. The cubic root of 13971206 is about 240.8488805417.

The spelling of 13971206 in words is "thirteen million, nine hundred seventy-one thousand, two hundred six".