628832777 has 2 divisors, whose sum is σ = 628832778. Its totient is φ = 628832776.

The previous prime is 628832773. The next prime is 628832801. The reversal of 628832777 is 777238826.

628832777 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 can be written as a sum of positive squares in only one way, i.e., 363436096 + 265396681 = 19064^2 + 16291^2 .

It is a cyclic number.

It is not a de Polignac number, because 628832777 - 2² = 628832773 is a prime.

It is a super-2 number, since 2×628832777² = 790861322859063458, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (628832773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314416388 + 314416389.

It is an arithmetic number, because the mean of its divisors is an integer number (314416389).

Almost surely, 2^628832777 is an apocalyptic number.

It is an amenable number.

628832777 is a deficient number, since it is larger than the sum of its proper divisors (1).

628832777 is an equidigital number, since it uses as much as digits as its factorization.

628832777 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1580544, while the sum is 50.

The square root of 628832777 is about 25076.5383775353. The cubic root of 628832777 is about 856.7321345867.

The spelling of 628832777 in words is "six hundred twenty-eight million, eight hundred thirty-two thousand, seven hundred seventy-seven".