628495 has 8 divisors (see below), whose sum is σ = 861984. Its totient is φ = 430944.

The previous prime is 628493. The next prime is 628499. The reversal of 628495 is 594826.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 628495 - 2¹ = 628493 is a prime.

It is a Duffinian number.

628495 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 628495.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628493) 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, 8944 + ... + 9013.

It is an arithmetic number, because the mean of its divisors is an integer number (107748).

2⁶²⁸⁴⁹⁵ is an apocalyptic number.

628495 is a deficient number, since it is larger than the sum of its proper divisors (233489).

628495 is a wasteful number, since it uses less digits than its factorization.

628495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17969.

The product of its digits is 17280, while the sum is 34.

The square root of 628495 is about 792.7767655526. The cubic root of 628495 is about 85.6578709463.

The spelling of 628495 in words is "six hundred twenty-eight thousand, four hundred ninety-five".