13971682 has 4 divisors (see below), whose sum is σ = 20957526. Its totient is φ = 6985840.

The previous prime is 13971667. The next prime is 13971697. The reversal of 13971682 is 28617931.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (13971667) and next prime (13971697).

It can be written as a sum of positive squares in only one way, i.e., 10055241 + 3916441 = 3171^2 + 1979^2 .

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 as a sum of consecutive naturals, namely, 3492919 + ... + 3492922.

Almost surely, 2^13971682 is an apocalyptic number.

13971682 is a deficient number, since it is larger than the sum of its proper divisors (6985844).

13971682 is an equidigital number, since it uses as much as digits as its factorization.

13971682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6985843.

The product of its digits is 18144, while the sum is 37.

The square root of 13971682 is about 3737.8713193474. The cubic root of 13971682 is about 240.8516157569.

The spelling of 13971682 in words is "thirteen million, nine hundred seventy-one thousand, six hundred eighty-two".