13745727 has 8 divisors (see below), whose sum is σ = 20364080. Its totient is φ = 9163800.

The previous prime is 13745689. The next prime is 13745731. The reversal of 13745727 is 72754731.

13745727 is a `hidden beast` number, since 13 + 74 + 572 + 7 = 666.

13745727 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13745727 - 2²⁰ = 12697151 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13745691 and 13745700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13745737) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254524 + ... + 254577.

It is an arithmetic number, because the mean of its divisors is an integer number (2545510).

Almost surely, 2^13745727 is an apocalyptic number.

13745727 is a deficient number, since it is larger than the sum of its proper divisors (6618353).

13745727 is an equidigital number, since it uses as much as digits as its factorization.

13745727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509110 (or 509104 counting only the distinct ones).

The product of its digits is 41160, while the sum is 36.

The square root of 13745727 is about 3707.5230275751. The cubic root of 13745727 is about 239.5461736310.

The spelling of 13745727 in words is "thirteen million, seven hundred forty-five thousand, seven hundred twenty-seven".