13681771 has 8 divisors (see below), whose sum is σ = 13989888. Its totient is φ = 13377000.

The previous prime is 13681739. The next prime is 13681777. The reversal of 13681771 is 17718631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13681771 - 2⁵ = 13681739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13681777) 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 in 7 ways as a sum of consecutive naturals, for example, 8566 + ... + 10036.

It is an arithmetic number, because the mean of its divisors is an integer number (1748736).

Almost surely, 2^13681771 is an apocalyptic number.

13681771 is a deficient number, since it is larger than the sum of its proper divisors (308117).

13681771 is a wasteful number, since it uses less digits than its factorization.

13681771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1673.

The product of its digits is 7056, while the sum is 34.

The square root of 13681771 is about 3698.8878058141. The cubic root of 13681771 is about 239.1740764794.

The spelling of 13681771 in words is "thirteen million, six hundred eighty-one thousand, seven hundred seventy-one".