13732681 has 4 divisors (see below), whose sum is σ = 13866112. Its totient is φ = 13599252.

The previous prime is 13732669. The next prime is 13732699. The reversal of 13732681 is 18623731.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18623731 = 7 ⋅2660533.

It is a cyclic number.

It is not a de Polignac number, because 13732681 - 2⁷ = 13732553 is a prime.

It is a super-2 number, since 2×13732681² = 377173054895522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13732981) 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 3 ways as a sum of consecutive naturals, for example, 66561 + ... + 66766.

It is an arithmetic number, because the mean of its divisors is an integer number (3466528).

Almost surely, 2^13732681 is an apocalyptic number.

It is an amenable number.

13732681 is a deficient number, since it is larger than the sum of its proper divisors (133431).

13732681 is a wasteful number, since it uses less digits than its factorization.

13732681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133430.

The product of its digits is 6048, while the sum is 31.

The square root of 13732681 is about 3705.7632142381. The cubic root of 13732681 is about 239.4703656222.

The spelling of 13732681 in words is "thirteen million, seven hundred thirty-two thousand, six hundred eighty-one".