628717506 has 32 divisors (see below), whose sum is σ = 1302436800. Its totient is φ = 202090560.

The previous prime is 628717501. The next prime is 628717513. The reversal of 628717506 is 605717826.

It is not an unprimeable number, because it can be changed into a prime (628717501) 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 15 ways as a sum of consecutive naturals, for example, 175885 + ... + 179423.

It is an arithmetic number, because the mean of its divisors is an integer number (40701150).

Almost surely, 2^628717506 is an apocalyptic number.

628717506 is an abundant number, since it is smaller than the sum of its proper divisors (673719294).

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

628717506 is a wasteful number, since it uses less digits than its factorization.

628717506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4594.

The product of its (nonzero) digits is 141120, while the sum is 42.

The square root of 628717506 is about 25074.2398887783. The cubic root of 628717506 is about 856.6797823512.

The spelling of 628717506 in words is "six hundred twenty-eight million, seven hundred seventeen thousand, five hundred six".