13643047 has 8 divisors (see below), whose sum is σ = 15286032. Its totient is φ = 12067200.

The previous prime is 13643041. The next prime is 13643051. The reversal of 13643047 is 74034631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13643047 - 2³ = 13643039 is a prime.

It is a super-2 number, since 2×13643047² = 372265462888418, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13643041) 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 7 ways as a sum of consecutive naturals, for example, 16354 + ... + 17167.

It is an arithmetic number, because the mean of its divisors is an integer number (1910754).

Almost surely, 2^13643047 is an apocalyptic number.

13643047 is a deficient number, since it is larger than the sum of its proper divisors (1642985).

13643047 is a wasteful number, since it uses less digits than its factorization.

13643047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33569.

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 13643047 is about 3693.6495502416. The cubic root of 13643047 is about 238.9482156441.

Adding to 13643047 its reverse (74034631), we get a palindrome (87677678).

The spelling of 13643047 in words is "thirteen million, six hundred forty-three thousand, forty-seven".