628604 has 12 divisors (see below), whose sum is σ = 1138200. Its totient is φ = 303408.

The previous prime is 628591. The next prime is 628651. The reversal of 628604 is 406826.

It is an Ulam number.

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, 2594 + ... + 2825.

It is an arithmetic number, because the mean of its divisors is an integer number (94850).

2⁶²⁸⁶⁰⁴ is an apocalyptic number.

It is an amenable number.

628604 is a deficient number, since it is larger than the sum of its proper divisors (509596).

628604 is a wasteful number, since it uses less digits than its factorization.

628604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5452 (or 5450 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 628604 is about 792.8455082801. The cubic root of 628604 is about 85.6628225467.

The spelling of 628604 in words is "six hundred twenty-eight thousand, six hundred four".