13720682 has 4 divisors (see below), whose sum is σ = 20581026. Its totient is φ = 6860340.

The previous prime is 13720661. The next prime is 13720709. The reversal of 13720682 is 28602731.

It is a happy number.

13720682 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.

It can be written as a sum of positive squares in only one way, i.e., 9991921 + 3728761 = 3161^2 + 1931^2 .

It is a super-2 number, since 2×13720682² = 376514229090248, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3430169 + ... + 3430172.

Almost surely, 2^13720682 is an apocalyptic number.

13720682 is a deficient number, since it is larger than the sum of its proper divisors (6860344).

13720682 is an equidigital number, since it uses as much as digits as its factorization.

13720682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6860343.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 13720682 is about 3704.1438956930. The cubic root of 13720682 is about 239.4005991479.

The spelling of 13720682 in words is "thirteen million, seven hundred twenty thousand, six hundred eighty-two".