628645711 has 2 divisors, whose sum is σ = 628645712. Its totient is φ = 628645710.

The previous prime is 628645663. The next prime is 628645747. The reversal of 628645711 is 117546826.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 628645711 - 2¹⁷ = 628514639 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (628645111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314322855 + 314322856.

It is an arithmetic number, because the mean of its divisors is an integer number (314322856).

Almost surely, 2^628645711 is an apocalyptic number.

628645711 is a deficient number, since it is larger than the sum of its proper divisors (1).

628645711 is an equidigital number, since it uses as much as digits as its factorization.

628645711 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80640, while the sum is 40.

The square root of 628645711 is about 25072.8081993222. The cubic root of 628645711 is about 856.6471722279.

The spelling of 628645711 in words is "six hundred twenty-eight million, six hundred forty-five thousand, seven hundred eleven".