628626 has 16 divisors (see below), whose sum is σ = 1331424. Its totient is φ = 197184.

The previous prime is 628591. The next prime is 628651. The reversal of 628626 is 626826.

628626 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 628593 and 628602.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 628626.

It is an unprimeable number.

628626 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2980 + ... + 3183.

It is an arithmetic number, because the mean of its divisors is an integer number (83214).

2⁶²⁸⁶²⁶ is an apocalyptic number.

628626 is an abundant number, since it is smaller than the sum of its proper divisors (702798).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

628626 is a wasteful number, since it uses less digits than its factorization.

628626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6185.

The product of its digits is 6912, while the sum is 30.

The square root of 628626 is about 792.8593822362. The cubic root of 628626 is about 85.6638218828.

The spelling of 628626 in words is "six hundred twenty-eight thousand, six hundred twenty-six".