6660071 has 8 divisors (see below), whose sum is σ = 7500288. Its totient is φ = 5859000.

The previous prime is 6660061. The next prime is 6660091. The reversal of 6660071 is 1700666.

6660071 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 6660071 - 2¹⁴ = 6643687 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6660071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6660011) 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, 9425 + ... + 10106.

It is an arithmetic number, because the mean of its divisors is an integer number (937536).

Almost surely, 2^6660071 is an apocalyptic number.

6660071 is a deficient number, since it is larger than the sum of its proper divisors (840217).

6660071 is a wasteful number, since it uses less digits than its factorization.

6660071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19573.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 6660071 is about 2580.7113360467. The cubic root of 6660071 is about 188.1451176964.

The spelling of 6660071 in words is "six million, six hundred sixty thousand, seventy-one".