628535 has 4 divisors (see below), whose sum is σ = 754248. Its totient is φ = 502824.

The previous prime is 628499. The next prime is 628547. The reversal of 628535 is 535826.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 535826 = 2 ⋅267913.

It is a cyclic number.

It is not a de Polignac number, because 628535 - 2¹⁰ = 627511 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 628498 and 628507.

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, 62849 + ... + 62858.

It is an arithmetic number, because the mean of its divisors is an integer number (188562).

2⁶²⁸⁵³⁵ is an apocalyptic number.

628535 is a deficient number, since it is larger than the sum of its proper divisors (125713).

628535 is a wasteful number, since it uses less digits than its factorization.

628535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125712.

The product of its digits is 7200, while the sum is 29.

The square root of 628535 is about 792.8019929339. The cubic root of 628535 is about 85.6596881138.

The spelling of 628535 in words is "six hundred twenty-eight thousand, five hundred thirty-five".