628533 has 8 divisors (see below), whose sum is σ = 931200. Its totient is φ = 419004.

The previous prime is 628499. The next prime is 628547. The reversal of 628533 is 335826.

628533 is a `hidden beast` number, since 628 + 5 + 33 = 666.

It is not a de Polignac number, because 628533 - 2⁹ = 628021 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 23279 = 628533 / (6 + 2 + 8 + 5 + 3 + 3).

628533 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 628497 and 628506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628583) 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 7 ways as a sum of consecutive naturals, for example, 11613 + ... + 11666.

It is an arithmetic number, because the mean of its divisors is an integer number (116400).

2⁶²⁸⁵³³ is an apocalyptic number.

It is an amenable number.

628533 is a deficient number, since it is larger than the sum of its proper divisors (302667).

628533 is a wasteful number, since it uses less digits than its factorization.

628533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23288 (or 23282 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 628533 is about 792.8007315839. The cubic root of 628533 is about 85.6595972573.

The spelling of 628533 in words is "six hundred twenty-eight thousand, five hundred thirty-three".