13730686 has 4 divisors (see below), whose sum is σ = 20596032. Its totient is φ = 6865342.

The previous prime is 13730683. The next prime is 13730687. The reversal of 13730686 is 68603731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 68603731 = 7 ⋅9800533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13730683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3432670 + ... + 3432673.

It is an arithmetic number, because the mean of its divisors is an integer number (5149008).

Almost surely, 2^13730686 is an apocalyptic number.

13730686 is a deficient number, since it is larger than the sum of its proper divisors (6865346).

13730686 is an equidigital number, since it uses as much as digits as its factorization.

13730686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6865345.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 13730686 is about 3705.4940291411. The cubic root of 13730686 is about 239.4587687967.

The spelling of 13730686 in words is "thirteen million, seven hundred thirty thousand, six hundred eighty-six".