628195 has 4 divisors (see below), whose sum is σ = 753840. Its totient is φ = 502552.

The previous prime is 628193. The next prime is 628207. The reversal of 628195 is 591826.

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

It is a cyclic number.

It is not a de Polignac number, because 628195 - 2¹ = 628193 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

628195 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (628193) 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 3 ways as a sum of consecutive naturals, for example, 62815 + ... + 62824.

It is an arithmetic number, because the mean of its divisors is an integer number (188460).

2⁶²⁸¹⁹⁵ is an apocalyptic number.

628195 is a deficient number, since it is larger than the sum of its proper divisors (125645).

628195 is a wasteful number, since it uses less digits than its factorization.

628195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125644.

The product of its digits is 4320, while the sum is 31.

The square root of 628195 is about 792.5875345979. The cubic root of 628195 is about 85.6442397315.

It can be divided in two parts, 6281 and 95, that multiplied together give a palindrome (596695).

The spelling of 628195 in words is "six hundred twenty-eight thousand, one hundred ninety-five".