628085 has 4 divisors (see below), whose sum is σ = 753708. Its totient is φ = 502464.

The previous prime is 628063. The next prime is 628093. The reversal of 628085 is 580826.

It is a happy number.

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 119716 + 508369 = 346^2 + 713^2 .

It is a cyclic number.

It is not a de Polignac number, because 628085 - 2⁶ = 628021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 62804 + ... + 62813.

It is an arithmetic number, because the mean of its divisors is an integer number (188427).

2⁶²⁸⁰⁸⁵ is an apocalyptic number.

It is an amenable number.

628085 is a deficient number, since it is larger than the sum of its proper divisors (125623).

628085 is a wasteful number, since it uses less digits than its factorization.

628085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125622.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 628085 is about 792.5181385937. The cubic root of 628085 is about 85.6392405320.

The spelling of 628085 in words is "six hundred twenty-eight thousand, eighty-five".