3636631 has 2 divisors, whose sum is σ = 3636632. Its totient is φ = 3636630.

The previous prime is 3636617. The next prime is 3636667. The reversal of 3636631 is 1366363.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3636631 - 2⁹ = 3636119 is a prime.

It is a super-2 number, since 2×3636631² = 26450170060322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3636631.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3630631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1818315 + 1818316.

It is an arithmetic number, because the mean of its divisors is an integer number (1818316).

Almost surely, 2^3636631 is an apocalyptic number.

3636631 is a deficient number, since it is larger than the sum of its proper divisors (1).

3636631 is an equidigital number, since it uses as much as digits as its factorization.

3636631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5832, while the sum is 28.

The square root of 3636631 is about 1906.9952805395. The cubic root of 3636631 is about 153.7799606715.

Adding to 3636631 its product of digits (5832), we get a palindrome (3642463).

The spelling of 3636631 in words is "three million, six hundred thirty-six thousand, six hundred thirty-one".