13486681 has 4 divisors (see below), whose sum is σ = 14524132. Its totient is φ = 12449232.

The previous prime is 13486657. The next prime is 13486687. The reversal of 13486681 is 18668431.

13486681 is digitally balanced in base 3, 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 2 ways, for example, as 5736025 + 7750656 = 2395^2 + 2784^2 .

It is a cyclic number.

It is not a de Polignac number, because 13486681 - 2¹⁷ = 13355609 is a prime.

It is a super-2 number, since 2×13486681² = 363781128791522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13486681.

It is not an unprimeable number, because it can be changed into a prime (13486687) 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 in 3 ways as a sum of consecutive naturals, for example, 518706 + ... + 518731.

It is an arithmetic number, because the mean of its divisors is an integer number (3631033).

Almost surely, 2^13486681 is an apocalyptic number.

It is an amenable number.

13486681 is a deficient number, since it is larger than the sum of its proper divisors (1037451).

13486681 is a wasteful number, since it uses less digits than its factorization.

13486681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1037450.

The product of its digits is 27648, while the sum is 37.

The square root of 13486681 is about 3672.4216805808. The cubic root of 13486681 is about 238.0318261231.

The spelling of 13486681 in words is "thirteen million, four hundred eighty-six thousand, six hundred eighty-one".