6866408 has 8 divisors (see below), whose sum is σ = 12874530. Its totient is φ = 3433200.

The previous prime is 6866389. The next prime is 6866411. The reversal of 6866408 is 8046686.

It can be written as a sum of positive squares in only one way, i.e., 5373124 + 1493284 = 2318^2 + 1222^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 429143 + ... + 429158.

Almost surely, 2^6866408 is an apocalyptic number.

It is an amenable number.

6866408 is a deficient number, since it is larger than the sum of its proper divisors (6008122).

6866408 is a wasteful number, since it uses less digits than its factorization.

6866408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 858307 (or 858303 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 6866408 is about 2620.3831780867. The cubic root of 6866408 is about 190.0683779743.

The spelling of 6866408 in words is "six million, eight hundred sixty-six thousand, four hundred eight".