628468636 has 12 divisors (see below), whose sum is σ = 1100184120. Its totient is φ = 314130320.

The previous prime is 628468619. The next prime is 628468637. The reversal of 628468636 is 636864826.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 628468636.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628468637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11506 + ... + 37273.

It is an arithmetic number, because the mean of its divisors is an integer number (91682010).

Almost surely, 2^628468636 is an apocalyptic number.

It is an amenable number.

628468636 is a deficient number, since it is larger than the sum of its proper divisors (471715484).

628468636 is a wasteful number, since it uses less digits than its factorization.

628468636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52004 (or 52002 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 49.

The square root of 628468636 is about 25069.2767346806. The cubic root of 628468636 is about 856.5667320901.

The spelling of 628468636 in words is "six hundred twenty-eight million, four hundred sixty-eight thousand, six hundred thirty-six".