628630 has 16 divisors (see below), whose sum is σ = 1162800. Its totient is φ = 244512.

The previous prime is 628591. The next prime is 628651. The reversal of 628630 is 36826.

It is a junction number, because it is equal to n+sod(n) for n = 628595 and 628604.

It is a congruent number.

It is an unprimeable number.

628630 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 7 ways as a sum of consecutive naturals, for example, 480 + ... + 1219.

It is an arithmetic number, because the mean of its divisors is an integer number (72675).

2⁶²⁸⁶³⁰ is an apocalyptic number.

628630 is a deficient number, since it is larger than the sum of its proper divisors (534170).

628630 is a wasteful number, since it uses less digits than its factorization.

628630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1743.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 628630 is about 792.8619047476. The cubic root of 628630 is about 85.6640035778.

The spelling of 628630 in words is "six hundred twenty-eight thousand, six hundred thirty".