628395 has 8 divisors (see below), whose sum is σ = 1005456. Its totient is φ = 335136.

The previous prime is 628391. The next prime is 628399. The reversal of 628395 is 593826.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (628391) and next prime (628399).

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

It is not a de Polignac number, because 628395 - 2² = 628391 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (628391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20932 + ... + 20961.

It is an arithmetic number, because the mean of its divisors is an integer number (125682).

2⁶²⁸³⁹⁵ is an apocalyptic number.

628395 is a deficient number, since it is larger than the sum of its proper divisors (377061).

628395 is a wasteful number, since it uses less digits than its factorization.

628395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41901.

The product of its digits is 12960, while the sum is 33.

The square root of 628395 is about 792.7136935868. The cubic root of 628395 is about 85.6533276901.

Adding to 628395 its reverse (593826), we get a palindrome (1222221).

The spelling of 628395 in words is "six hundred twenty-eight thousand, three hundred ninety-five".