628333 has 4 divisors (see below), whose sum is σ = 632700. Its totient is φ = 623968.

The previous prime is 628319. The next prime is 628357. The reversal of 628333 is 333826.

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

It can be written as a sum of positive squares in 2 ways, for example, as 316969 + 311364 = 563^2 + 558^2 .

It is a cyclic number.

It is not a de Polignac number, because 628333 - 2⁵ = 628301 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 628298 and 628307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628363) 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, 1960 + ... + 2257.

It is an arithmetic number, because the mean of its divisors is an integer number (158175).

2⁶²⁸³³³ is an apocalyptic number.

It is an amenable number.

628333 is a deficient number, since it is larger than the sum of its proper divisors (4367).

628333 is a wasteful number, since it uses less digits than its factorization.

628333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4366.

The product of its digits is 2592, while the sum is 25.

The square root of 628333 is about 792.6745864477. The cubic root of 628333 is about 85.6505106292.

It can be divided in two parts, 628 and 333, that added together give a square (961 = 31²).

The spelling of 628333 in words is "six hundred twenty-eight thousand, three hundred thirty-three".