668822086669 has 8 divisors (see below), whose sum is σ = 729630307008. Its totient is φ = 608014901760.

The previous prime is 668822086637. The next prime is 668822086711. The reversal of 668822086669 is 966680228866.

668822086669 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 668822086669 - 2⁵ = 668822086637 is a prime.

It is a super-2 number, since 2×668822086669² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668822086969) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1812264 + ... + 2149870.

It is an arithmetic number, because the mean of its divisors is an integer number (91203788376).

Almost surely, 2^668822086669 is an apocalyptic number.

It is an amenable number.

668822086669 is a deficient number, since it is larger than the sum of its proper divisors (60808220339).

668822086669 is a wasteful number, since it uses less digits than its factorization.

668822086669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517715.

The product of its (nonzero) digits is 143327232, while the sum is 67.

The spelling of 668822086669 in words is "six hundred sixty-eight billion, eight hundred twenty-two million, eighty-six thousand, six hundred sixty-nine".