628965 has 20 divisors (see below), whose sum is σ = 1128204. Its totient is φ = 335232.

The previous prime is 628939. The next prime is 628973. The reversal of 628965 is 569826.

628965 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 136161 + 492804 = 369^2 + 702^2 .

It is not a de Polignac number, because 628965 - 2⁸ = 628709 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 372 + ... + 1181.

2⁶²⁸⁹⁶⁵ is an apocalyptic number.

It is an amenable number.

628965 is a deficient number, since it is larger than the sum of its proper divisors (499239).

628965 is a wasteful number, since it uses less digits than its factorization.

628965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1570 (or 1561 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 628965 is about 793.0731366022. The cubic root of 628965 is about 85.6792177976.

The spelling of 628965 in words is "six hundred twenty-eight thousand, nine hundred sixty-five".