3636666 has 24 divisors (see below), whose sum is σ = 8596224. Its totient is φ = 1101960.

The previous prime is 3636631. The next prime is 3636667. The reversal of 3636666 is 6666363.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 3636666.

It is not an unprimeable number, because it can be changed into a prime (3636667) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8986 + ... + 9381.

It is an arithmetic number, because the mean of its divisors is an integer number (358176).

Almost surely, 2^3636666 is an apocalyptic number.

3636666 is an abundant number, since it is smaller than the sum of its proper divisors (4959558).

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

3636666 is a wasteful number, since it uses less digits than its factorization.

3636666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18386 (or 18383 counting only the distinct ones).

The product of its digits is 69984, while the sum is 36.

The square root of 3636666 is about 1907.0044572575. The cubic root of 3636666 is about 153.7804540111.

The spelling of 3636666 in words is "three million, six hundred thirty-six thousand, six hundred sixty-six".