4640563 has 4 divisors (see below), whose sum is σ = 4655520. Its totient is φ = 4625608.

The previous prime is 4640557. The next prime is 4640567. The reversal of 4640563 is 3650464.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4640563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4640567) 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, 7003 + ... + 7636.

It is an arithmetic number, because the mean of its divisors is an integer number (1163880).

Almost surely, 2^4640563 is an apocalyptic number.

4640563 is a deficient number, since it is larger than the sum of its proper divisors (14957).

4640563 is a wasteful number, since it uses less digits than its factorization.

4640563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14956.

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

The square root of 4640563 is about 2154.1966019841. The cubic root of 4640563 is about 166.7977639651.

Subtracting from 4640563 its reverse (3650464), we obtain a palindrome (990099).

The spelling of 4640563 in words is "four million, six hundred forty thousand, five hundred sixty-three".