628599 has 4 divisors (see below), whose sum is σ = 838136. Its totient is φ = 419064.

The previous prime is 628591. The next prime is 628651. The reversal of 628599 is 995826.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 628599 - 2³ = 628591 is a prime.

It is a D-number.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a zygodrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104764 + ... + 104769.

It is an arithmetic number, because the mean of its divisors is an integer number (209534).

2⁶²⁸⁵⁹⁹ is an apocalyptic number.

628599 is a deficient number, since it is larger than the sum of its proper divisors (209537).

628599 is a wasteful number, since it uses less digits than its factorization.

628599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209536.

The product of its digits is 38880, while the sum is 39.

The square root of 628599 is about 792.8423550744. The cubic root of 628599 is about 85.6625954216.

The spelling of 628599 in words is "six hundred twenty-eight thousand, five hundred ninety-nine".