6661927 has 8 divisors (see below), whose sum is σ = 7019136. Its totient is φ = 6310392.

The previous prime is 6661901. The next prime is 6661933. The reversal of 6661927 is 7291666.

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

It is a cyclic number.

It is not a de Polignac number, because 6661927 - 2¹⁹ = 6137639 is a prime.

It is a Duffinian number.

6661927 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6661957) 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 in 7 ways as a sum of consecutive naturals, for example, 1108 + ... + 3814.

It is an arithmetic number, because the mean of its divisors is an integer number (877392).

Almost surely, 2^6661927 is an apocalyptic number.

6661927 is a deficient number, since it is larger than the sum of its proper divisors (357209).

6661927 is a wasteful number, since it uses less digits than its factorization.

6661927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2837.

The product of its digits is 27216, while the sum is 37.

The square root of 6661927 is about 2581.0709017770. The cubic root of 6661927 is about 188.1625932311.

The spelling of 6661927 in words is "six million, six hundred sixty-one thousand, nine hundred twenty-seven".