6667847 has 4 divisors (see below), whose sum is σ = 6680376. Its totient is φ = 6655320.

The previous prime is 6667819. The next prime is 6667853. The reversal of 6667847 is 7487666.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6667847 - 2¹² = 6663751 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6667798 and 6667807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6667867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5429 + ... + 6542.

It is an arithmetic number, because the mean of its divisors is an integer number (1670094).

Almost surely, 2^6667847 is an apocalyptic number.

6667847 is a deficient number, since it is larger than the sum of its proper divisors (12529).

6667847 is a wasteful number, since it uses less digits than its factorization.

6667847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12528.

The product of its digits is 338688, while the sum is 44.

The square root of 6667847 is about 2582.2174579226. The cubic root of 6667847 is about 188.2183124827.

The spelling of 6667847 in words is "six million, six hundred sixty-seven thousand, eight hundred forty-seven".