13486661 has 4 divisors (see below), whose sum is σ = 14280012. Its totient is φ = 12693312.

The previous prime is 13486657. The next prime is 13486687. The reversal of 13486661 is 16668431.

13486661 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, and also an emirpimes, since its reverse is a distinct semiprime: 16668431 = 13 ⋅1282187.

It can be written as a sum of positive squares in 2 ways, for example, as 8673025 + 4813636 = 2945^2 + 2194^2 .

It is a cyclic number.

It is not a de Polignac number, because 13486661 - 2² = 13486657 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13486621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 396650 + ... + 396683.

It is an arithmetic number, because the mean of its divisors is an integer number (3570003).

Almost surely, 2^13486661 is an apocalyptic number.

It is an amenable number.

13486661 is a deficient number, since it is larger than the sum of its proper divisors (793351).

13486661 is an equidigital number, since it uses as much as digits as its factorization.

13486661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 793350.

The product of its digits is 20736, while the sum is 35.

The square root of 13486661 is about 3672.4189575810. The cubic root of 13486661 is about 238.0317084604.

The spelling of 13486661 in words is "thirteen million, four hundred eighty-six thousand, six hundred sixty-one".