628168 has 16 divisors (see below), whose sum is σ = 1186380. Its totient is φ = 311808.

The previous prime is 628139. The next prime is 628171. The reversal of 628168 is 861826.

It can be written as a sum of positive squares in 2 ways, for example, as 580644 + 47524 = 762^2 + 218^2 .

Its product of digits (4608) is a multiple of the sum of its prime factors (576).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1696 + ... + 2032.

2⁶²⁸¹⁶⁸ is an apocalyptic number.

It is an amenable number.

628168 is a deficient number, since it is larger than the sum of its proper divisors (558212).

628168 is a wasteful number, since it uses less digits than its factorization.

628168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576 (or 572 counting only the distinct ones).

The product of its digits is 4608, while the sum is 31.

The square root of 628168 is about 792.5705015959. The cubic root of 628168 is about 85.6430127093.

The spelling of 628168 in words is "six hundred twenty-eight thousand, one hundred sixty-eight".