3866636 has 6 divisors (see below), whose sum is σ = 6766620. Its totient is φ = 1933316.

The previous prime is 3866627. The next prime is 3866647. The reversal of 3866636 is 6366683.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 3866636.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 483326 + ... + 483333.

It is an arithmetic number, because the mean of its divisors is an integer number (1127770).

Almost surely, 2^3866636 is an apocalyptic number.

It is an amenable number.

3866636 is a deficient number, since it is larger than the sum of its proper divisors (2899984).

3866636 is a wasteful number, since it uses less digits than its factorization.

3866636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 966663 (or 966661 counting only the distinct ones).

The product of its digits is 93312, while the sum is 38.

The square root of 3866636 is about 1966.3763627546. The cubic root of 3866636 is about 156.9559425784.

The spelling of 3866636 in words is "three million, eight hundred sixty-six thousand, six hundred thirty-six".