628856341 has 2 divisors, whose sum is σ = 628856342. Its totient is φ = 628856340.

The previous prime is 628856273. The next prime is 628856377. The reversal of 628856341 is 143658826.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 507195441 + 121660900 = 22521^2 + 11030^2 .

It is a cyclic number.

It is not a de Polignac number, because 628856341 - 2¹⁷ = 628725269 is a prime.

It is a super-3 number, since 3×628856341³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (628806341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314428170 + 314428171.

It is an arithmetic number, because the mean of its divisors is an integer number (314428171).

Almost surely, 2^628856341 is an apocalyptic number.

It is an amenable number.

628856341 is a deficient number, since it is larger than the sum of its proper divisors (1).

628856341 is an equidigital number, since it uses as much as digits as its factorization.

628856341 is an evil number, because the sum of its binary digits is even.

The product of its digits is 276480, while the sum is 43.

The square root of 628856341 is about 25077.0082146974. The cubic root of 628856341 is about 856.7428357803.

The spelling of 628856341 in words is "six hundred twenty-eight million, eight hundred fifty-six thousand, three hundred forty-one".