628789593 has 4 divisors (see below), whose sum is σ = 838386128. Its totient is φ = 419193060.

The previous prime is 628789549. The next prime is 628789597. The reversal of 628789593 is 395987826.

628789593 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 628789593 - 2²⁰ = 627741017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (628789597) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104798263 + ... + 104798268.

It is an arithmetic number, because the mean of its divisors is an integer number (209596532).

Almost surely, 2^628789593 is an apocalyptic number.

It is an amenable number.

628789593 is a deficient number, since it is larger than the sum of its proper divisors (209596535).

628789593 is a wasteful number, since it uses less digits than its factorization.

628789593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209596534.

The product of its digits is 6531840, while the sum is 57.

The square root of 628789593 is about 25075.6773188682. The cubic root of 628789593 is about 856.7125226067.

The spelling of 628789593 in words is "six hundred twenty-eight million, seven hundred eighty-nine thousand, five hundred ninety-three".