628966265887 has 2 divisors, whose sum is σ = 628966265888. Its totient is φ = 628966265886.

The previous prime is 628966265861. The next prime is 628966265923. The reversal of 628966265887 is 788562669826.

628966265887 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 is a cyclic number.

It is not a de Polignac number, because 628966265887 - 2²³ = 628957877279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (628966265987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314483132943 + 314483132944.

It is an arithmetic number, because the mean of its divisors is an integer number (314483132944).

Almost surely, 2^628966265887 is an apocalyptic number.

628966265887 is a deficient number, since it is larger than the sum of its proper divisors (1).

628966265887 is an equidigital number, since it uses as much as digits as its factorization.

628966265887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 836075520, while the sum is 73.

The spelling of 628966265887 in words is "six hundred twenty-eight billion, nine hundred sixty-six million, two hundred sixty-five thousand, eight hundred eighty-seven".