628468785 has 24 divisors (see below), whose sum is σ = 1244967360. Its totient is φ = 287299872.

The previous prime is 628468769. The next prime is 628468793. The reversal of 628468785 is 587864826.

628468785 is a `hidden beast` number, since 628 + 4 + 6 + 8 + 7 + 8 + 5 = 666.

628468785 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 628468785 - 2⁴ = 628468769 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 997255 + ... + 997884.

It is an arithmetic number, because the mean of its divisors is an integer number (51873640).

Almost surely, 2^628468785 is an apocalyptic number.

It is an amenable number.

628468785 is a deficient number, since it is larger than the sum of its proper divisors (616498575).

628468785 is a wasteful number, since it uses less digits than its factorization.

628468785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1995157 (or 1995154 counting only the distinct ones).

The product of its digits is 5160960, while the sum is 54.

The square root of 628468785 is about 25069.2797064455. The cubic root of 628468785 is about 856.5667997829.

It can be divided in two parts, 62846 and 8785, that added together give a triangular number (71631 = T₃₇₈).

The spelling of 628468785 in words is "six hundred twenty-eight million, four hundred sixty-eight thousand, seven hundred eighty-five".