628566708 has 96 divisors (see below), whose sum is σ = 1866009600. Its totient is φ = 163252320.

The previous prime is 628566661. The next prime is 628566727. The reversal of 628566708 is 807665826.

It is a super-2 number, since 2×628566708² = 790192212811914528, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38335 + ... + 52217.

It is an arithmetic number, because the mean of its divisors is an integer number (19437600).

Almost surely, 2^628566708 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 628566708, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (933004800).

628566708 is an abundant number, since it is smaller than the sum of its proper divisors (1237442892).

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

628566708 is a wasteful number, since it uses less digits than its factorization.

628566708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13922 (or 13906 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 48.

The square root of 628566708 is about 25071.2326781114. The cubic root of 628566708 is about 856.6112852777.

The spelling of 628566708 in words is "six hundred twenty-eight million, five hundred sixty-six thousand, seven hundred eight".