677222071 has 2 divisors, whose sum is σ = 677222072. Its totient is φ = 677222070.

The previous prime is 677222059. The next prime is 677222089. The reversal of 677222071 is 170222776.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 677222071 - 2¹¹ = 677220023 is a prime.

It is equal to p_35133397 and since 677222071 and 35133397 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (677226071) 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, 338611035 + 338611036.

It is an arithmetic number, because the mean of its divisors is an integer number (338611036).

Almost surely, 2^677222071 is an apocalyptic number.

677222071 is a deficient number, since it is larger than the sum of its proper divisors (1).

677222071 is an equidigital number, since it uses as much as digits as its factorization.

677222071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16464, while the sum is 34.

The square root of 677222071 is about 26023.4907535480. The cubic root of 677222071 is about 878.1668412175.

The spelling of 677222071 in words is "six hundred seventy-seven million, two hundred twenty-two thousand, seventy-one".