628748633 has 2 divisors, whose sum is σ = 628748634. Its totient is φ = 628748632.

The previous prime is 628748629. The next prime is 628748641. The reversal of 628748633 is 336847826.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 503912704 + 124835929 = 22448^2 + 11173^2 .

It is a cyclic number.

It is not a de Polignac number, because 628748633 - 2² = 628748629 is a prime.

It is not a weakly prime, because it can be changed into another prime (628748693) 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 as a sum of consecutive naturals, namely, 314374316 + 314374317.

It is an arithmetic number, because the mean of its divisors is an integer number (314374317).

Almost surely, 2^628748633 is an apocalyptic number.

It is an amenable number.

628748633 is a deficient number, since it is larger than the sum of its proper divisors (1).

628748633 is an equidigital number, since it uses as much as digits as its factorization.

628748633 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1161216, while the sum is 47.

The square root of 628748633 is about 25074.8605778776. The cubic root of 628748633 is about 856.6939198249.

The spelling of 628748633 in words is "six hundred twenty-eight million, seven hundred forty-eight thousand, six hundred thirty-three".