6659671 has 16 divisors (see below), whose sum is σ = 7338240. Its totient is φ = 6022080.

The previous prime is 6659663. The next prime is 6659677. The reversal of 6659671 is 1769566.

It is not a de Polignac number, because 6659671 - 2³ = 6659663 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 (6659677) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64606 + ... + 64708.

It is an arithmetic number, because the mean of its divisors is an integer number (458640).

Almost surely, 2^6659671 is an apocalyptic number.

6659671 is a deficient number, since it is larger than the sum of its proper divisors (678569).

6659671 is a wasteful number, since it uses less digits than its factorization.

6659671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246.

The product of its digits is 68040, while the sum is 40.

The square root of 6659671 is about 2580.6338368703. The cubic root of 6659671 is about 188.1413509921.

The spelling of 6659671 in words is "six million, six hundred fifty-nine thousand, six hundred seventy-one".