628054771 has 2 divisors, whose sum is σ = 628054772. Its totient is φ = 628054770.

The previous prime is 628054759. The next prime is 628054781. The reversal of 628054771 is 177450826.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 628054771 - 2¹⁹ = 627530483 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (628054781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314027385 + 314027386.

It is an arithmetic number, because the mean of its divisors is an integer number (314027386).

Almost surely, 2^628054771 is an apocalyptic number.

628054771 is a deficient number, since it is larger than the sum of its proper divisors (1).

628054771 is an equidigital number, since it uses as much as digits as its factorization.

628054771 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 94080, while the sum is 40.

The square root of 628054771 is about 25061.0209488760. The cubic root of 628054771 is about 856.3786660432.

It can be divided in two parts, 62805 and 4771, that added together give a palindrome (67576).

The spelling of 628054771 in words is "six hundred twenty-eight million, fifty-four thousand, seven hundred seventy-one".