3564640 has 24 divisors (see below), whose sum is σ = 8421840. Its totient is φ = 1425792.

The previous prime is 3564629. The next prime is 3564643. The reversal of 3564640 is 464653.

It is a junction number, because it is equal to n+sod(n) for n = 3564599 and 3564608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3564643) 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, 10980 + ... + 11299.

It is an arithmetic number, because the mean of its divisors is an integer number (350910).

Almost surely, 2^3564640 is an apocalyptic number.

It is an amenable number.

3564640 is an abundant number, since it is smaller than the sum of its proper divisors (4857200).

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

3564640 is a wasteful number, since it uses less digits than its factorization.

3564640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22294 (or 22286 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 3564640 is about 1888.0254235576. The cubic root of 3564640 is about 152.7584437854.

The spelling of 3564640 in words is "three million, five hundred sixty-four thousand, six hundred forty".