628899 has 8 divisors (see below), whose sum is σ = 859152. Its totient is φ = 408960.

The previous prime is 628877. The next prime is 628909. The reversal of 628899 is 998826.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 628899 - 2¹² = 624803 is a prime.

628899 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 628899.

It is not an unprimeable number, because it can be changed into a prime (628819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2434 + ... + 2679.

It is an arithmetic number, because the mean of its divisors is an integer number (107394).

2⁶²⁸⁸⁹⁹ is an apocalyptic number.

628899 is a deficient number, since it is larger than the sum of its proper divisors (230253).

628899 is a wasteful number, since it uses less digits than its factorization.

628899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5157.

The product of its digits is 62208, while the sum is 42.

The square root of 628899 is about 793.0315252246. The cubic root of 628899 is about 85.6762207966.

The spelling of 628899 in words is "six hundred twenty-eight thousand, eight hundred ninety-nine".