628245 has 24 divisors (see below), whose sum is σ = 1138176. Its totient is φ = 319968.

The previous prime is 628231. The next prime is 628261. The reversal of 628245 is 542826.

It is not a de Polignac number, because 628245 - 2⁵ = 628213 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 732 + ... + 1338.

It is an arithmetic number, because the mean of its divisors is an integer number (47424).

2⁶²⁸²⁴⁵ is an apocalyptic number.

It is an amenable number.

628245 is a deficient number, since it is larger than the sum of its proper divisors (509931).

628245 is a wasteful number, since it uses less digits than its factorization.

628245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641 (or 638 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 628245 is about 792.6190762277. The cubic root of 628245 is about 85.6465119019.

The spelling of 628245 in words is "six hundred twenty-eight thousand, two hundred forty-five".