3630643 has 2 divisors, whose sum is σ = 3630644. Its totient is φ = 3630642.

The previous prime is 3630631. The next prime is 3630667. The reversal of 3630643 is 3460363.

It is a weak prime.

It is an emirp because it is prime and its reverse (3460363) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3630643 - 2⁵ = 3630611 is a prime.

It is not a weakly prime, because it can be changed into another prime (3630743) by changing a digit.

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 as a sum of consecutive naturals, namely, 1815321 + 1815322.

It is an arithmetic number, because the mean of its divisors is an integer number (1815322).

Almost surely, 2^3630643 is an apocalyptic number.

3630643 is a deficient number, since it is larger than the sum of its proper divisors (1).

3630643 is an equidigital number, since it uses as much as digits as its factorization.

3630643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 25.

The square root of 3630643 is about 1905.4246245916. The cubic root of 3630643 is about 153.6955106887.

The spelling of 3630643 in words is "three million, six hundred thirty thousand, six hundred forty-three".