628766286719867 has 2 divisors, whose sum is σ = 628766286719868. Its totient is φ = 628766286719866.

The previous prime is 628766286719843. The next prime is 628766286720001. The reversal of 628766286719867 is 768917682667826.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 628766286719867 - 2²⁰ = 628766285671291 is a prime.

It is a super-2 number, since 2×628766286719867² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (628736286719867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314383143359933 + 314383143359934.

It is an arithmetic number, because the mean of its divisors is an integer number (314383143359934).

Almost surely, 2^{628766286719867} is an apocalyptic number.

628766286719867 is a deficient number, since it is larger than the sum of its proper divisors (1).

628766286719867 is an equidigital number, since it uses as much as digits as its factorization.

628766286719867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 49161240576, while the sum is 89.

The spelling of 628766286719867 in words is "six hundred twenty-eight trillion, seven hundred sixty-six billion, two hundred eighty-six million, seven hundred nineteen thousand, eight hundred sixty-seven".