13427647 has 4 divisors (see below), whose sum is σ = 13560696. Its totient is φ = 13294600.

The previous prime is 13427641. The next prime is 13427663. The reversal of 13427647 is 74672431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74672431 = 101 ⋅739331.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13427647 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 (13427641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66373 + ... + 66574.

It is an arithmetic number, because the mean of its divisors is an integer number (3390174).

Almost surely, 2^13427647 is an apocalyptic number.

13427647 is a deficient number, since it is larger than the sum of its proper divisors (133049).

13427647 is a wasteful number, since it uses less digits than its factorization.

13427647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133048.

The product of its digits is 28224, while the sum is 34.

The square root of 13427647 is about 3664.3753901586. The cubic root of 13427647 is about 237.6840132544.

The spelling of 13427647 in words is "thirteen million, four hundred twenty-seven thousand, six hundred forty-seven".