677821163 has 2 divisors, whose sum is σ = 677821164. Its totient is φ = 677821162.

The previous prime is 677821099. The next prime is 677821213. The reversal of 677821163 is 361128776.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 677821163 - 2⁶ = 677821099 is a prime.

It is a super-3 number, since 3×677821163³ (a number of 27 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 677821163.

It is not a weakly prime, because it can be changed into another prime (677821363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338910581 + 338910582.

It is an arithmetic number, because the mean of its divisors is an integer number (338910582).

Almost surely, 2^677821163 is an apocalyptic number.

677821163 is a deficient number, since it is larger than the sum of its proper divisors (1).

677821163 is an equidigital number, since it uses as much as digits as its factorization.

677821163 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672, while the sum is 41.

The square root of 677821163 is about 26034.9988092952. The cubic root of 677821163 is about 878.4257162563.

The spelling of 677821163 in words is "six hundred seventy-seven million, eight hundred twenty-one thousand, one hundred sixty-three".