3642636 has 12 divisors (see below), whose sum is σ = 8499512. Its totient is φ = 1214208.

The previous prime is 3642631. The next prime is 3642643. The reversal of 3642636 is 6362463.

3642636 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

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

It is not an unprimeable number, because it can be changed into a prime (3642631) 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 3 ways as a sum of consecutive naturals, for example, 151765 + ... + 151788.

Almost surely, 2^3642636 is an apocalyptic number.

It is an amenable number.

3642636 is an abundant number, since it is smaller than the sum of its proper divisors (4856876).

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

3642636 is a wasteful number, since it uses less digits than its factorization.

3642636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303560 (or 303558 counting only the distinct ones).

The product of its digits is 15552, while the sum is 30.

The square root of 3642636 is about 1908.5690975178. The cubic root of 3642636 is about 153.8645573625.

It can be divided in two parts, 3642 and 636, that added together give a triangular number (4278 = T₉₂).

The spelling of 3642636 in words is "three million, six hundred forty-two thousand, six hundred thirty-six".