628695 has 16 divisors (see below), whose sum is σ = 1117920. Its totient is φ = 335232.

The previous prime is 628687. The next prime is 628699. The reversal of 628695 is 596826.

It is not a de Polignac number, because 628695 - 2³ = 628687 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2194 + ... + 2463.

It is an arithmetic number, because the mean of its divisors is an integer number (69870).

2⁶²⁸⁶⁹⁵ is an apocalyptic number.

628695 is a deficient number, since it is larger than the sum of its proper divisors (489225).

628695 is a wasteful number, since it uses less digits than its factorization.

628695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4671 (or 4665 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 628695 is about 792.9028944329. The cubic root of 628695 is about 85.6669560132. Note that the first 3 decimals are identical.

The spelling of 628695 in words is "six hundred twenty-eight thousand, six hundred ninety-five".