13931662 has 4 divisors (see below), whose sum is σ = 20897496. Its totient is φ = 6965830.

The previous prime is 13931639. The next prime is 13931663. The reversal of 13931662 is 26613931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 26613931 = 2659 ⋅10009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13931663) by changing a digit.

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, 3482914 + ... + 3482917.

It is an arithmetic number, because the mean of its divisors is an integer number (5224374).

Almost surely, 2^13931662 is an apocalyptic number.

13931662 is a deficient number, since it is larger than the sum of its proper divisors (6965834).

13931662 is an equidigital number, since it uses as much as digits as its factorization.

13931662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6965833.

The product of its digits is 5832, while the sum is 31.

The square root of 13931662 is about 3732.5141660816. The cubic root of 13931662 is about 240.6214335110.

The spelling of 13931662 in words is "thirteen million, nine hundred thirty-one thousand, six hundred sixty-two".