662664712771 has 2 divisors, whose sum is σ = 662664712772. Its totient is φ = 662664712770.

The previous prime is 662664712673. The next prime is 662664712777. The reversal of 662664712771 is 177217466266.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 662664712771 - 2²³ = 662656324163 is a prime.

It is not a weakly prime, because it can be changed into another prime (662664712777) 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, 331332356385 + 331332356386.

It is an arithmetic number, because the mean of its divisors is an integer number (331332356386).

Almost surely, 2^662664712771 is an apocalyptic number.

662664712771 is a deficient number, since it is larger than the sum of its proper divisors (1).

662664712771 is an equidigital number, since it uses as much as digits as its factorization.

662664712771 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7112448, while the sum is 55.

The spelling of 662664712771 in words is "six hundred sixty-two billion, six hundred sixty-four million, seven hundred twelve thousand, seven hundred seventy-one".