8664669 has 24 divisors (see below), whose sum is σ = 13628160. Its totient is φ = 5272992.

The previous prime is 8664661. The next prime is 8664671. The reversal of 8664669 is 9664668.

It is not a de Polignac number, because 8664669 - 2³ = 8664661 is a prime.

It is a super-2 number, since 2×8664669² = 150152977759122, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8664661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11692 + ... + 12410.

It is an arithmetic number, because the mean of its divisors is an integer number (567840).

Almost surely, 2^8664669 is an apocalyptic number.

It is an amenable number.

8664669 is a deficient number, since it is larger than the sum of its proper divisors (4963491).

8664669 is a wasteful number, since it uses less digits than its factorization.

8664669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 841 (or 838 counting only the distinct ones).

The product of its digits is 373248, while the sum is 45.

The square root of 8664669 is about 2943.5809824090. The cubic root of 8664669 is about 205.3922215305.

Subtracting 8664669 from its reverse (9664668), we obtain a palindrome (999999).

The spelling of 8664669 in words is "eight million, six hundred sixty-four thousand, six hundred sixty-nine".