662886689 has 2 divisors, whose sum is σ = 662886690. Its totient is φ = 662886688.

The previous prime is 662886683. The next prime is 662886739. The reversal of 662886689 is 986688266.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 592192225 + 70694464 = 24335^2 + 8408^2 .

It is a cyclic number.

It is not a de Polignac number, because 662886689 - 2¹² = 662882593 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (662886683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331443344 + 331443345.

It is an arithmetic number, because the mean of its divisors is an integer number (331443345).

Almost surely, 2^662886689 is an apocalyptic number.

It is an amenable number.

662886689 is a deficient number, since it is larger than the sum of its proper divisors (1).

662886689 is an equidigital number, since it uses as much as digits as its factorization.

662886689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11943936, while the sum is 59.

The square root of 662886689 is about 25746.5859678521. The cubic root of 662886689 is about 871.9262770663.

The spelling of 662886689 in words is "six hundred sixty-two million, eight hundred eighty-six thousand, six hundred eighty-nine".