13706661 has 8 divisors (see below), whose sum is σ = 18415584. Its totient is φ = 9067760.

The previous prime is 13706611. The next prime is 13706663. The reversal of 13706661 is 16660731.

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 13706661 - 2⁷ = 13706533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13706663) 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, 17046 + ... + 17831.

It is an arithmetic number, because the mean of its divisors is an integer number (2301948).

Almost surely, 2^13706661 is an apocalyptic number.

It is an amenable number.

13706661 is a deficient number, since it is larger than the sum of its proper divisors (4708923).

13706661 is a wasteful number, since it uses less digits than its factorization.

13706661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35011.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 13706661 is about 3702.2508018771. The cubic root of 13706661 is about 239.3190244901.

The spelling of 13706661 in words is "thirteen million, seven hundred six thousand, six hundred sixty-one".