628998 has 16 divisors (see below), whose sum is σ = 1274880. Its totient is φ = 206856.

The previous prime is 628997. The next prime is 629003. The reversal of 628998 is 899826.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628993) 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, 190 + ... + 1137.

It is an arithmetic number, because the mean of its divisors is an integer number (79680).

2⁶²⁸⁹⁹⁸ is an apocalyptic number.

628998 is an abundant number, since it is smaller than the sum of its proper divisors (645882).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

628998 is a wasteful number, since it uses less digits than its factorization.

628998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1411.

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

The square root of 628998 is about 793.0939414723. The cubic root of 628998 is about 85.6807162195.

The spelling of 628998 in words is "six hundred twenty-eight thousand, nine hundred ninety-eight".