628005 has 16 divisors (see below), whose sum is σ = 1148544. Its totient is φ = 287040.

The previous prime is 627973. The next prime is 628013. The reversal of 628005 is 500826.

It is a happy number.

It is not a de Polignac number, because 628005 - 2⁵ = 627973 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2886 + ... + 3095.

It is an arithmetic number, because the mean of its divisors is an integer number (71784).

2⁶²⁸⁰⁰⁵ is an apocalyptic number.

It is an amenable number.

628005 is a deficient number, since it is larger than the sum of its proper divisors (520539).

628005 is a wasteful number, since it uses less digits than its factorization.

628005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5996.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 628005 is about 792.4676649555. The cubic root of 628005 is about 85.6356043840.

The spelling of 628005 in words is "six hundred twenty-eight thousand, five".