620563 has 4 divisors (see below), whose sum is σ = 647568. Its totient is φ = 593560.

The previous prime is 620561. The next prime is 620567. The reversal of 620563 is 365026.

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

It is a cyclic number.

It is not a de Polignac number, because 620563 - 2¹ = 620561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (620561) 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, 13468 + ... + 13513.

It is an arithmetic number, because the mean of its divisors is an integer number (161892).

2⁶²⁰⁵⁶³ is an apocalyptic number.

620563 is a deficient number, since it is larger than the sum of its proper divisors (27005).

620563 is a wasteful number, since it uses less digits than its factorization.

620563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27004.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 620563 is about 787.7582116360. The cubic root of 620563 is about 85.2959923022.

Adding to 620563 its reverse (365026), we get a palindrome (985589).

The spelling of 620563 in words is "six hundred twenty thousand, five hundred sixty-three".