623533 has 4 divisors (see below), whose sum is σ = 625600. Its totient is φ = 621468.

The previous prime is 623531. The next prime is 623537. The reversal of 623533 is 335326.

623533 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 335326 = 2 ⋅167663.

It is a cyclic number.

It is not a de Polignac number, because 623533 - 2¹ = 623531 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623531) 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, 483 + ... + 1216.

It is an arithmetic number, because the mean of its divisors is an integer number (156400).

2⁶²³⁵³³ is an apocalyptic number.

It is an amenable number.

623533 is a deficient number, since it is larger than the sum of its proper divisors (2067).

623533 is a wasteful number, since it uses less digits than its factorization.

623533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2066.

The product of its digits is 1620, while the sum is 22.

The square root of 623533 is about 789.6410576965. The cubic root of 623533 is about 85.4318506684.

Adding to 623533 its reverse (335326), we get a palindrome (958859).

It can be divided in two parts, 623 and 533, that added together give a square (1156 = 34²).

The spelling of 623533 in words is "six hundred twenty-three thousand, five hundred thirty-three".