3240644 has 12 divisors (see below), whose sum is σ = 6186768. Its totient is φ = 1473000.

The previous prime is 3240619. The next prime is 3240649. The reversal of 3240644 is 4460423.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (3240649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36782 + ... + 36869.

It is an arithmetic number, because the mean of its divisors is an integer number (515564).

Almost surely, 2^3240644 is an apocalyptic number.

It is an amenable number.

3240644 is a deficient number, since it is larger than the sum of its proper divisors (2946124).

3240644 is a wasteful number, since it uses less digits than its factorization.

3240644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73666 (or 73664 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 3240644 is about 1800.1788800005. The cubic root of 3240644 is about 147.9825277645.

The spelling of 3240644 in words is "three million, two hundred forty thousand, six hundred forty-four".