628683318 has 24 divisors (see below), whose sum is σ = 1368104400. Its totient is φ = 208644624.

The previous prime is 628683301. The next prime is 628683323. The reversal of 628683318 is 813386826.

628683318 is a `hidden beast` number, since 628 + 6 + 8 + 3 + 3 + 18 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72138 + ... + 80381.

It is an arithmetic number, because the mean of its divisors is an integer number (57004350).

Almost surely, 2^628683318 is an apocalyptic number.

628683318 is an abundant number, since it is smaller than the sum of its proper divisors (739421082).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

628683318 is a wasteful number, since it uses less digits than its factorization.

628683318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152756 (or 152753 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The square root of 628683318 is about 25073.5581439891. The cubic root of 628683318 is about 856.6642540739.

The spelling of 628683318 in words is "six hundred twenty-eight million, six hundred eighty-three thousand, three hundred eighteen".