6866636 has 24 divisors (see below), whose sum is σ = 13848576. Its totient is φ = 2918160.

The previous prime is 6866633. The next prime is 6866647. The reversal of 6866636 is 6366686.

It is a junction number, because it is equal to n+sod(n) for n = 6866593 and 6866602.

It is not an unprimeable number, because it can be changed into a prime (6866633) 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, 2591 + ... + 4521.

It is an arithmetic number, because the mean of its divisors is an integer number (577024).

Almost surely, 2^6866636 is an apocalyptic number.

It is an amenable number.

6866636 is an abundant number, since it is smaller than the sum of its proper divisors (6981940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6866636 is a wasteful number, since it uses less digits than its factorization.

6866636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2069 (or 2067 counting only the distinct ones).

The product of its digits is 186624, while the sum is 41.

The square root of 6866636 is about 2620.4266828133. The cubic root of 6866636 is about 190.0704816997.

It can be divided in two parts, 68666 and 36, that multiplied together give a triangular number (2471976 = T₂₂₂₃).

The spelling of 6866636 in words is "six million, eight hundred sixty-six thousand, six hundred thirty-six".