6647271 has 8 divisors (see below), whose sum is σ = 8995584. Its totient is φ = 4365240.

The previous prime is 6647269. The next prime is 6647273. The reversal of 6647271 is 1727466.

It is an interprime number because it is at equal distance from previous prime (6647269) and next prime (6647273).

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

It is not a de Polignac number, because 6647271 - 2¹ = 6647269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6647273) 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, 16335 + ... + 16736.

It is an arithmetic number, because the mean of its divisors is an integer number (1124448).

Almost surely, 2^6647271 is an apocalyptic number.

6647271 is a deficient number, since it is larger than the sum of its proper divisors (2348313).

6647271 is a wasteful number, since it uses less digits than its factorization.

6647271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33141.

The product of its digits is 14112, while the sum is 33.

The square root of 6647271 is about 2578.2302069443. The cubic root of 6647271 is about 188.0245082731.

The spelling of 6647271 in words is "six million, six hundred forty-seven thousand, two hundred seventy-one".