628777163 has 6 divisors (see below), whose sum is σ = 731434716. Its totient is φ = 538951812.

The previous prime is 628777153. The next prime is 628777187. The reversal of 628777163 is 361777826.

628777163 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 628777163 - 2⁶ = 628777099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (628777103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6416045 + ... + 6416142.

It is an arithmetic number, because the mean of its divisors is an integer number (121905786).

Almost surely, 2^628777163 is an apocalyptic number.

628777163 is a deficient number, since it is larger than the sum of its proper divisors (102657553).

628777163 is a wasteful number, since it uses less digits than its factorization.

628777163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12832201 (or 12832194 counting only the distinct ones).

The product of its digits is 592704, while the sum is 47.

The square root of 628777163 is about 25075.4294679074. The cubic root of 628777163 is about 856.7068773655.

The spelling of 628777163 in words is "six hundred twenty-eight million, seven hundred seventy-seven thousand, one hundred sixty-three".