628580689 has 8 divisors (see below), whose sum is σ = 698663232. Its totient is φ = 560654640.

The previous prime is 628580681. The next prime is 628580699. The reversal of 628580689 is 986085826.

628580689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 628580689 - 2³ = 628580681 is a prime.

It is a super-2 number, since 2×628580689² = 790227365167429442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (628580681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 538509 + ... + 539674.

It is an arithmetic number, because the mean of its divisors is an integer number (87332904).

Almost surely, 2^628580689 is an apocalyptic number.

It is an amenable number.

628580689 is a deficient number, since it is larger than the sum of its proper divisors (70082543).

628580689 is a wasteful number, since it uses less digits than its factorization.

628580689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1078247.

The product of its (nonzero) digits is 1658880, while the sum is 52.

The square root of 628580689 is about 25071.5115021013. The cubic root of 628580689 is about 856.6176363372.

The spelling of 628580689 in words is "six hundred twenty-eight million, five hundred eighty thousand, six hundred eighty-nine".