628837 has 6 divisors (see below), whose sum is σ = 691334. Its totient is φ = 571560.

The previous prime is 628819. The next prime is 628841. The reversal of 628837 is 738826.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 527076 + 101761 = 726^2 + 319^2 .

It is not a de Polignac number, because 628837 - 2⁷ = 628709 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628877) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2478 + ... + 2719.

2⁶²⁸⁸³⁷ is an apocalyptic number.

It is an amenable number.

628837 is a deficient number, since it is larger than the sum of its proper divisors (62497).

628837 is a wasteful number, since it uses less digits than its factorization.

628837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5219 (or 5208 counting only the distinct ones).

The product of its digits is 16128, while the sum is 34.

The square root of 628837 is about 792.9924337596. The cubic root of 628837 is about 85.6734052411.

The spelling of 628837 in words is "six hundred twenty-eight thousand, eight hundred thirty-seven".