623563 has 2 divisors, whose sum is σ = 623564. Its totient is φ = 623562.

The previous prime is 623537. The next prime is 623591. The reversal of 623563 is 365326.

623563 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 623563 - 2⁵ = 623531 is a prime.

It is not a weakly prime, because it can be changed into another prime (623263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311781 + 311782.

It is an arithmetic number, because the mean of its divisors is an integer number (311782).

2⁶²³⁵⁶³ is an apocalyptic number.

623563 is a deficient number, since it is larger than the sum of its proper divisors (1).

623563 is an equidigital number, since it uses as much as digits as its factorization.

623563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3240, while the sum is 25.

The square root of 623563 is about 789.6600534407. The cubic root of 623563 is about 85.4332207720.

Adding to 623563 its reverse (365326), we get a palindrome (988889).

The spelling of 623563 in words is "six hundred twenty-three thousand, five hundred sixty-three".