628066908 has 108 divisors (see below), whose sum is σ = 1853211360. Its totient is φ = 178827264.

The previous prime is 628066883. The next prime is 628066963. The reversal of 628066908 is 809660826.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 816348 + ... + 817116.

Almost surely, 2^628066908 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 628066908, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (926605680).

628066908 is an abundant number, since it is smaller than the sum of its proper divisors (1225144452).

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

628066908 is a wasteful number, since it uses less digits than its factorization.

628066908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1256 (or 1244 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 628066908 is about 25061.2630966598. The cubic root of 628066908 is about 856.3841824415.

The spelling of 628066908 in words is "six hundred twenty-eight million, sixty-six thousand, nine hundred eight".