628394373 has 6 divisors (see below), whose sum is σ = 907680774. Its totient is φ = 418929576.

The previous prime is 628394363. The next prime is 628394381. The reversal of 628394373 is 373493826.

It can be written as a sum of positive squares in only one way, i.e., 506115009 + 122279364 = 22497^2 + 11058^2 .

It is not a de Polignac number, because 628394373 - 2⁹ = 628393861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628394323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34910790 + ... + 34910807.

It is an arithmetic number, because the mean of its divisors is an integer number (151280129).

Almost surely, 2^628394373 is an apocalyptic number.

It is an amenable number.

628394373 is a deficient number, since it is larger than the sum of its proper divisors (279286401).

628394373 is a wasteful number, since it uses less digits than its factorization.

628394373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69821603 (or 69821600 counting only the distinct ones).

The product of its digits is 653184, while the sum is 45.

The square root of 628394373 is about 25067.7955353078. The cubic root of 628394373 is about 856.5329920234.

The spelling of 628394373 in words is "six hundred twenty-eight million, three hundred ninety-four thousand, three hundred seventy-three".