2087668717 has 2 divisors, whose sum is σ = 2087668718. Its totient is φ = 2087668716.

The previous prime is 2087668703. The next prime is 2087668753. The reversal of 2087668717 is 7178667802.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1812971241 + 274697476 = 42579^2 + 16574^2 .

It is a cyclic number.

It is not a de Polignac number, because 2087668717 - 2⁷ = 2087668589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2087660717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1043834358 + 1043834359.

It is an arithmetic number, because the mean of its divisors is an integer number (1043834359).

Almost surely, 2^2087668717 is an apocalyptic number.

It is an amenable number.

2087668717 is a deficient number, since it is larger than the sum of its proper divisors (1).

2087668717 is an equidigital number, since it uses as much as digits as its factorization.

2087668717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1580544, while the sum is 52.

The square root of 2087668717 is about 45691.0135256376. The cubic root of 2087668717 is about 1278.0677056010.

The spelling of 2087668717 in words is "two billion, eighty-seven million, six hundred sixty-eight thousand, seven hundred seventeen".