628655583 has 16 divisors (see below), whose sum is σ = 860251392. Its totient is φ = 408120000.

The previous prime is 628655581. The next prime is 628655611. The reversal of 628655583 is 385556826.

It is not a de Polignac number, because 628655583 - 2¹ = 628655581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628655581) 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 15 ways as a sum of consecutive naturals, for example, 65758 + ... + 74708.

It is an arithmetic number, because the mean of its divisors is an integer number (53765712).

Almost surely, 2^628655583 is an apocalyptic number.

628655583 is a deficient number, since it is larger than the sum of its proper divisors (231595809).

628655583 is a wasteful number, since it uses less digits than its factorization.

628655583 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9566.

The product of its digits is 1728000, while the sum is 48.

The square root of 628655583 is about 25073.0050652091. The cubic root of 628655583 is about 856.6516563522.

The spelling of 628655583 in words is "six hundred twenty-eight million, six hundred fifty-five thousand, five hundred eighty-three".