628968630 has 16 divisors (see below), whose sum is σ = 1509524784. Its totient is φ = 167724960.

The previous prime is 628968619. The next prime is 628968631. The reversal of 628968630 is 36869826.

It is a self number, because there is not a number n which added to its sum of digits gives 628968630.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628968631) 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 7 ways as a sum of consecutive naturals, for example, 10482781 + ... + 10482840.

It is an arithmetic number, because the mean of its divisors is an integer number (94345299).

Almost surely, 2^628968630 is an apocalyptic number.

628968630 is an abundant number, since it is smaller than the sum of its proper divisors (880556154).

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

628968630 is a wasteful number, since it uses less digits than its factorization.

628968630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20965631.

The product of its (nonzero) digits is 746496, while the sum is 48.

The square root of 628968630 is about 25079.2469982653. The cubic root of 628968630 is about 856.7938262660.

The spelling of 628968630 in words is "six hundred twenty-eight million, nine hundred sixty-eight thousand, six hundred thirty".