628647801833 has 2 divisors, whose sum is σ = 628647801834. Its totient is φ = 628647801832.

The previous prime is 628647801679. The next prime is 628647801853. The reversal of 628647801833 is 338108746826.

628647801833 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 can be written as a sum of positive squares in only one way, i.e., 627441420544 + 1206381289 = 792112^2 + 34733^2 .

It is a cyclic number.

It is not a de Polignac number, because 628647801833 - 2²⁰ = 628646753257 is a prime.

It is not a weakly prime, because it can be changed into another prime (628647801853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314323900916 + 314323900917.

It is an arithmetic number, because the mean of its divisors is an integer number (314323900917).

Almost surely, 2^628647801833 is an apocalyptic number.

It is an amenable number.

628647801833 is a deficient number, since it is larger than the sum of its proper divisors (1).

628647801833 is an equidigital number, since it uses as much as digits as its factorization.

628647801833 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9289728, while the sum is 56.

The spelling of 628647801833 in words is "six hundred twenty-eight billion, six hundred forty-seven million, eight hundred one thousand, eight hundred thirty-three".