6866147 has 8 divisors (see below), whose sum is σ = 7448112. Its totient is φ = 6304000.

The previous prime is 6866143. The next prime is 6866149. The reversal of 6866147 is 7416686.

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 6866147 - 2² = 6866143 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 6866147.

It is not an unprimeable number, because it can be changed into a prime (6866143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4229 + ... + 5622.

It is an arithmetic number, because the mean of its divisors is an integer number (931014).

Almost surely, 2^6866147 is an apocalyptic number.

6866147 is a deficient number, since it is larger than the sum of its proper divisors (581965).

6866147 is a wasteful number, since it uses less digits than its factorization.

6866147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9909.

The product of its digits is 48384, while the sum is 38.

The square root of 6866147 is about 2620.3333757368. Note that the first 4 decimals coincide. The cubic root of 6866147 is about 190.0659697052.

The spelling of 6866147 in words is "six million, eight hundred sixty-six thousand, one hundred forty-seven".