6659871 has 8 divisors (see below), whose sum is σ = 9005184. Its totient is φ = 4377240.

The previous prime is 6659843. The next prime is 6659893. The reversal of 6659871 is 1789566.

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

It is not a de Polignac number, because 6659871 - 2¹³ = 6651679 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6652871) 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, 15421 + ... + 15846.

It is an arithmetic number, because the mean of its divisors is an integer number (1125648).

Almost surely, 2^6659871 is an apocalyptic number.

6659871 is a deficient number, since it is larger than the sum of its proper divisors (2345313).

6659871 is a wasteful number, since it uses less digits than its factorization.

6659871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31341.

The product of its digits is 90720, while the sum is 42.

The square root of 6659871 is about 2580.6725867494. The cubic root of 6659871 is about 188.1432343631.

The spelling of 6659871 in words is "six million, six hundred fifty-nine thousand, eight hundred seventy-one".