13681751 has 4 divisors (see below), whose sum is σ = 13906104. Its totient is φ = 13457400.

The previous prime is 13681739. The next prime is 13681777. The reversal of 13681751 is 15718631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15718631 = 1123 ⋅13997.

It is a cyclic number.

It is not a de Polignac number, because 13681751 - 2¹⁴ = 13665367 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 (13681721) 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, 112085 + ... + 112206.

It is an arithmetic number, because the mean of its divisors is an integer number (3476526).

Almost surely, 2^13681751 is an apocalyptic number.

13681751 is a deficient number, since it is larger than the sum of its proper divisors (224353).

13681751 is an equidigital number, since it uses as much as digits as its factorization.

13681751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224352.

The product of its digits is 5040, while the sum is 32.

The square root of 13681751 is about 3698.8851022977. The cubic root of 13681751 is about 239.1739599379.

The spelling of 13681751 in words is "thirteen million, six hundred eighty-one thousand, seven hundred fifty-one".