628603433 has 4 divisors (see below), whose sum is σ = 631211988. Its totient is φ = 625994880.

The previous prime is 628603421. The next prime is 628603439. The reversal of 628603433 is 334306826.

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 433805584 + 194797849 = 20828^2 + 13957^2 .

It is a cyclic number.

It is not a de Polignac number, because 628603433 - 2⁸ = 628603177 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 628603393 and 628603402.

It is not an unprimeable number, because it can be changed into a prime (628603439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1303916 + ... + 1304397.

It is an arithmetic number, because the mean of its divisors is an integer number (157802997).

Almost surely, 2^628603433 is an apocalyptic number.

It is an amenable number.

628603433 is a deficient number, since it is larger than the sum of its proper divisors (2608555).

628603433 is a wasteful number, since it uses less digits than its factorization.

628603433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2608554.

The product of its (nonzero) digits is 62208, while the sum is 35.

The square root of 628603433 is about 25071.9650805436. The cubic root of 628603433 is about 856.6279679074.

The spelling of 628603433 in words is "six hundred twenty-eight million, six hundred three thousand, four hundred thirty-three".