3633640 has 16 divisors (see below), whose sum is σ = 8175780. Its totient is φ = 1453440.

The previous prime is 3633583. The next prime is 3633647. The reversal of 3633640 is 463363.

3633640 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 3452164 + 181476 = 1858^2 + 426^2 .

It is not an unprimeable number, because it can be changed into a prime (3633647) 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 in 3 ways as a sum of consecutive naturals, for example, 45381 + ... + 45460.

Almost surely, 2^3633640 is an apocalyptic number.

It is an amenable number.

3633640 is an abundant number, since it is smaller than the sum of its proper divisors (4542140).

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

3633640 is a wasteful number, since it uses less digits than its factorization.

3633640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90852 (or 90848 counting only the distinct ones).

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

The square root of 3633640 is about 1906.2109012384. The cubic root of 3633640 is about 153.7377895871.

The spelling of 3633640 in words is "three million, six hundred thirty-three thousand, six hundred forty".