3640563 has 6 divisors (see below), whose sum is σ = 5258604. Its totient is φ = 2427036.

The previous prime is 3640561. The next prime is 3640577. The reversal of 3640563 is 3650463.

It is not a de Polignac number, because 3640563 - 2¹ = 3640561 is a prime.

It is a d-powerful number, because it can be written as 3⁵ + 6⁴ + 4⁶ + 0 + 5⁹ + 6⁸ + 3⁷ .

It is not an unprimeable number, because it can be changed into a prime (3640561) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 202245 + ... + 202262.

It is an arithmetic number, because the mean of its divisors is an integer number (876434).

Almost surely, 2^3640563 is an apocalyptic number.

3640563 is a deficient number, since it is larger than the sum of its proper divisors (1618041).

3640563 is a wasteful number, since it uses less digits than its factorization.

3640563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404513 (or 404510 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

The square root of 3640563 is about 1908.0259432199. The cubic root of 3640563 is about 153.8353640574.

The spelling of 3640563 in words is "three million, six hundred forty thousand, five hundred sixty-three".