628568273 has 4 divisors (see below), whose sum is σ = 629334708. Its totient is φ = 627801840.

The previous prime is 628568267. The next prime is 628568299. The reversal of 628568273 is 372865826.

It is a happy number.

628568273 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.

It can be written as a sum of positive squares in 2 ways, for example, as 400920529 + 227647744 = 20023^2 + 15088^2 .

It is a cyclic number.

It is not a de Polignac number, because 628568273 - 2⁴ = 628568257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (628568573) 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, 381986 + ... + 383627.

It is an arithmetic number, because the mean of its divisors is an integer number (157333677).

Almost surely, 2^628568273 is an apocalyptic number.

It is an amenable number.

628568273 is a deficient number, since it is larger than the sum of its proper divisors (766435).

628568273 is an equidigital number, since it uses as much as digits as its factorization.

628568273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 766434.

The product of its digits is 967680, while the sum is 47.

The square root of 628568273 is about 25071.2638891620. The cubic root of 628568273 is about 856.6119962050.

The spelling of 628568273 in words is "six hundred twenty-eight million, five hundred sixty-eight thousand, two hundred seventy-three".