628228847 has 2 divisors, whose sum is σ = 628228848. Its totient is φ = 628228846.

The previous prime is 628228817. The next prime is 628228859. The reversal of 628228847 is 748822826.

628228847 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 628228847 - 2²⁸ = 359793391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (628228807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314114423 + 314114424.

It is an arithmetic number, because the mean of its divisors is an integer number (314114424).

Almost surely, 2^628228847 is an apocalyptic number.

628228847 is a deficient number, since it is larger than the sum of its proper divisors (1).

628228847 is an equidigital number, since it uses as much as digits as its factorization.

628228847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 688128, while the sum is 47.

The square root of 628228847 is about 25064.4937511213. The cubic root of 628228847 is about 856.4577786773.

The spelling of 628228847 in words is "six hundred twenty-eight million, two hundred twenty-eight thousand, eight hundred forty-seven".