624563 has 4 divisors (see below), whose sum is σ = 661320. Its totient is φ = 587808.

The previous prime is 624541. The next prime is 624577. The reversal of 624563 is 365426.

624563 = 22² + 23² + ... + 123².

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 365426 = 2 ⋅182713.

It is a cyclic number.

It is not a de Polignac number, because 624563 - 2¹² = 620467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (624593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18353 + ... + 18386.

It is an arithmetic number, because the mean of its divisors is an integer number (165330).

2⁶²⁴⁵⁶³ is an apocalyptic number.

624563 is a deficient number, since it is larger than the sum of its proper divisors (36757).

624563 is a wasteful number, since it uses less digits than its factorization.

624563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36756.

The product of its digits is 4320, while the sum is 26.

The square root of 624563 is about 790.2929836459. The cubic root of 624563 is about 85.4788657680.

Adding to 624563 its reverse (365426), we get a palindrome (989989).

The spelling of 624563 in words is "six hundred twenty-four thousand, five hundred sixty-three".