3636866 has 8 divisors (see below), whose sum is σ = 5742480. Its totient is φ = 1722708.

The previous prime is 3636839. The next prime is 3636877. The reversal of 3636866 is 6686363.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (38), and also a Moran number because the ratio is a prime number: 95707 = 3636866 / (3 + 6 + 3 + 6 + 8 + 6 + 6).

It is an Ulam number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 47816 + ... + 47891.

It is an arithmetic number, because the mean of its divisors is an integer number (717810).

Almost surely, 2^3636866 is an apocalyptic number.

3636866 is a deficient number, since it is larger than the sum of its proper divisors (2105614).

3636866 is a wasteful number, since it uses less digits than its factorization.

3636866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95728.

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

The square root of 3636866 is about 1907.0568947989. The cubic root of 3636866 is about 153.7832730333.

The spelling of 3636866 in words is "three million, six hundred thirty-six thousand, eight hundred sixty-six".