9664554669 has 16 divisors (see below), whose sum is σ = 16065753600. Its totient is φ = 5020547760.

The previous prime is 9664554659. The next prime is 9664554671.

9664554669 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 9664554669 - 2⁹ = 9664554157 is a prime.

It is a super-2 number, since 2×9664554669² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9664554629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20918719 + ... + 20919180.

It is an arithmetic number, because the mean of its divisors is an integer number (1004109600).

Almost surely, 2^9664554669 is an apocalyptic number.

It is an amenable number.

9664554669 is a deficient number, since it is larger than the sum of its proper divisors (6401198931).

9664554669 is a wasteful number, since it uses less digits than its factorization.

9664554669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41837920.

The product of its digits is 41990400, while the sum is 60.

The square root of 9664554669 is about 98308.4669242685. The cubic root of 9664554669 is about 2130.0703591561.

The spelling of 9664554669 in words is "nine billion, six hundred sixty-four million, five hundred fifty-four thousand, six hundred sixty-nine".