628003073 has 4 divisors (see below), whose sum is σ = 628057428. Its totient is φ = 627948720.

The previous prime is 628003031. The next prime is 628003121. The reversal of 628003073 is 370300826.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 193989184 + 434013889 = 13928^2 + 20833^2 .

It is a cyclic number.

It is not a de Polignac number, because 628003073 - 2¹² = 627998977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (628003373) 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, 2186 + ... + 35507.

It is an arithmetic number, because the mean of its divisors is an integer number (157014357).

Almost surely, 2^628003073 is an apocalyptic number.

It is an amenable number.

628003073 is a deficient number, since it is larger than the sum of its proper divisors (54355).

628003073 is a wasteful number, since it uses less digits than its factorization.

628003073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54354.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 628003073 is about 25059.9894852332. The cubic root of 628003073 is about 856.3551679444.

Adding to 628003073 its reverse (370300826), we get a palindrome (998303899).

The spelling of 628003073 in words is "six hundred twenty-eight million, three thousand, seventy-three".