668068014773 has 2 divisors, whose sum is σ = 668068014774. Its totient is φ = 668068014772.

The previous prime is 668068014673. The next prime is 668068014781. The reversal of 668068014773 is 377410860866.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 603926374129 + 64141640644 = 777127^2 + 253262^2 .

It is a cyclic number.

It is not a de Polignac number, because 668068014773 - 2³⁶ = 599348538037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (668068014673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334034007386 + 334034007387.

It is an arithmetic number, because the mean of its divisors is an integer number (334034007387).

Almost surely, 2^668068014773 is an apocalyptic number.

It is an amenable number.

668068014773 is a deficient number, since it is larger than the sum of its proper divisors (1).

668068014773 is an equidigital number, since it uses as much as digits as its factorization.

668068014773 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8128512, while the sum is 56.

The spelling of 668068014773 in words is "six hundred sixty-eight billion, sixty-eight million, fourteen thousand, seven hundred seventy-three".