6866667 has 16 divisors (see below), whose sum is σ = 10222080. Its totient is φ = 4555656.

The previous prime is 6866663. The next prime is 6866677. The reversal of 6866667 is 7666686.

It is a happy number.

It is not a de Polignac number, because 6866667 - 2² = 6866663 is a prime.

It is a super-2 number, since 2×6866667² = 94302231377778, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6866663) 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 15 ways as a sum of consecutive naturals, for example, 6618 + ... + 7584.

It is an arithmetic number, because the mean of its divisors is an integer number (638880).

Almost surely, 2^6866667 is an apocalyptic number.

6866667 is a deficient number, since it is larger than the sum of its proper divisors (3355413).

6866667 is a wasteful number, since it uses less digits than its factorization.

6866667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1239 (or 1233 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 6866667 is about 2620.4325978739. The cubic root of 6866667 is about 190.0707677289.

The spelling of 6866667 in words is "six million, eight hundred sixty-six thousand, six hundred sixty-seven".