628612 has 12 divisors (see below), whose sum is σ = 1127196. Its totient is φ = 306560.

The previous prime is 628591. The next prime is 628651. The reversal of 628612 is 216826.

It can be written as a sum of positive squares in 2 ways, for example, as 75076 + 553536 = 274^2 + 744^2 .

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, 1753 + ... + 2080.

It is an arithmetic number, because the mean of its divisors is an integer number (93933).

2⁶²⁸⁶¹² is an apocalyptic number.

It is an amenable number.

628612 is a deficient number, since it is larger than the sum of its proper divisors (498584).

628612 is a wasteful number, since it uses less digits than its factorization.

628612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3878 (or 3876 counting only the distinct ones).

The product of its digits is 1152, while the sum is 25.

The square root of 628612 is about 792.8505533832. The cubic root of 628612 is about 85.6631859443.

The spelling of 628612 in words is "six hundred twenty-eight thousand, six hundred twelve".