628823983 has 2 divisors, whose sum is σ = 628823984. Its totient is φ = 628823982.

The previous prime is 628823953. The next prime is 628824029. The reversal of 628823983 is 389328826.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-628823983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (628823953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314411991 + 314411992.

It is an arithmetic number, because the mean of its divisors is an integer number (314411992).

Almost surely, 2^628823983 is an apocalyptic number.

628823983 is a deficient number, since it is larger than the sum of its proper divisors (1).

628823983 is an equidigital number, since it uses as much as digits as its factorization.

628823983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 995328, while the sum is 49.

The square root of 628823983 is about 25076.3630337416. The cubic root of 628823983 is about 856.7281408712.

The spelling of 628823983 in words is "six hundred twenty-eight million, eight hundred twenty-three thousand, nine hundred eighty-three".