13727661 has 16 divisors (see below), whose sum is σ = 18869760. Its totient is φ = 8871680.

The previous prime is 13727647. The next prime is 13727663. The reversal of 13727661 is 16672731.

It is a cyclic number.

It is not a de Polignac number, because 13727661 - 2⁷ = 13727533 is a prime.

Its product of digits (10584) is a multiple of the sum of its prime divisors (756).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13727663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28420 + ... + 28898.

It is an arithmetic number, because the mean of its divisors is an integer number (1179360).

Almost surely, 2^13727661 is an apocalyptic number.

It is an amenable number.

13727661 is a deficient number, since it is larger than the sum of its proper divisors (5142099).

13727661 is a wasteful number, since it uses less digits than its factorization.

13727661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756.

The product of its digits is 10584, while the sum is 33.

The square root of 13727661 is about 3705.0858289654. The cubic root of 13727661 is about 239.4411824946.

The spelling of 13727661 in words is "thirteen million, seven hundred twenty-seven thousand, six hundred sixty-one".