6661846 has 4 divisors (see below), whose sum is σ = 9992772. Its totient is φ = 3330922.

The previous prime is 6661783. The next prime is 6661849. The reversal of 6661846 is 6481666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6661849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1665460 + ... + 1665463.

It is an arithmetic number, because the mean of its divisors is an integer number (2498193).

Almost surely, 2^6661846 is an apocalyptic number.

6661846 is a deficient number, since it is larger than the sum of its proper divisors (3330926).

6661846 is a wasteful number, since it uses less digits than its factorization.

6661846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3330925.

The product of its digits is 41472, while the sum is 37.

The square root of 6661846 is about 2581.0552105680. The cubic root of 6661846 is about 188.1618306274.

The spelling of 6661846 in words is "six million, six hundred sixty-one thousand, eight hundred forty-six".