9660440669 has 8 divisors (see below), whose sum is σ = 10588611360. Its totient is φ = 8740594800.

The previous prime is 9660440659. The next prime is 9660440687.

It is a happy number.

9660440669 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 9660440669 - 2¹² = 9660436573 is a prime.

It is a super-2 number, since 2×9660440669² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9660440639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2078774 + ... + 2083415.

It is an arithmetic number, because the mean of its divisors is an integer number (1323576420).

Almost surely, 2^9660440669 is an apocalyptic number.

It is an amenable number.

9660440669 is a deficient number, since it is larger than the sum of its proper divisors (928170691).

9660440669 is a wasteful number, since it uses less digits than its factorization.

9660440669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4162411.

The product of its (nonzero) digits is 1679616, while the sum is 50.

The square root of 9660440669 is about 98287.5407617873. The cubic root of 9660440669 is about 2129.7680740371.

The spelling of 9660440669 in words is "nine billion, six hundred sixty million, four hundred forty thousand, six hundred sixty-nine".