628891147 has 2 divisors, whose sum is σ = 628891148. Its totient is φ = 628891146.

The previous prime is 628891121. The next prime is 628891199. The reversal of 628891147 is 741198826.

628891147 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 628891147 - 2¹⁹ = 628366859 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 628891097 and 628891106.

It is not a weakly prime, because it can be changed into another prime (628891447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314445573 + 314445574.

It is an arithmetic number, because the mean of its divisors is an integer number (314445574).

Almost surely, 2^628891147 is an apocalyptic number.

628891147 is a deficient number, since it is larger than the sum of its proper divisors (1).

628891147 is an equidigital number, since it uses as much as digits as its factorization.

628891147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 193536, while the sum is 46.

The square root of 628891147 is about 25077.7021874015. The cubic root of 628891147 is about 856.7586418497.

The spelling of 628891147 in words is "six hundred twenty-eight million, eight hundred ninety-one thousand, one hundred forty-seven".