668927065169 has 8 divisors (see below), whose sum is σ = 729745898112. Its totient is φ = 608109445840.

The previous prime is 668927065159. The next prime is 668927065307. The reversal of 668927065169 is 961560729866.

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 668927065169 - 2²⁰ = 668926016593 is a prime.

It is a super-2 number, since 2×668927065169² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (668927065139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1153112 + ... + 1633254.

It is an arithmetic number, because the mean of its divisors is an integer number (91218237264).

Almost surely, 2^668927065169 is an apocalyptic number.

It is an amenable number.

668927065169 is a deficient number, since it is larger than the sum of its proper divisors (60818832943).

668927065169 is a wasteful number, since it uses less digits than its factorization.

668927065169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606807.

The product of its (nonzero) digits is 58786560, while the sum is 65.

The spelling of 668927065169 in words is "six hundred sixty-eight billion, nine hundred twenty-seven million, sixty-five thousand, one hundred sixty-nine".