9660660660669 has 8 divisors (see below), whose sum is σ = 12880920028032. Its totient is φ = 6440420866880.

The previous prime is 9660660660649. The next prime is 9660660660709.

9660660660669 is nontrivially palindromic in base 10.

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 9660660660669 - 2¹³ = 9660660652477 is a prime.

It is a super-2 number, since 2×9660660660669² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9660660660649) 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, 3700197 + ... + 5745674.

It is an arithmetic number, because the mean of its divisors is an integer number (1610115003504).

Almost surely, 2^{9660660660669} is an apocalyptic number.

It is an amenable number.

9660660660669 is a deficient number, since it is larger than the sum of its proper divisors (3220259367363).

9660660660669 is a wasteful number, since it uses less digits than its factorization.

9660660660669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9786787.

The product of its (nonzero) digits is 136048896, while the sum is 66.

The spelling of 9660660660669 in words is "nine trillion, six hundred sixty billion, six hundred sixty million, six hundred sixty thousand, six hundred sixty-nine".