8666672 has 40 divisors (see below), whose sum is σ = 19332096. Its totient is φ = 3686976.

The previous prime is 8666627. The next prime is 8666681. The reversal of 8666672 is 2766668.

It is a super-2 number, since 2×8666672² = 150222407111168, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24803 + ... + 25149.

Almost surely, 2^8666672 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8666672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9666048).

8666672 is an abundant number, since it is smaller than the sum of its proper divisors (10665424).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8666672 is a wasteful number, since it uses less digits than its factorization.

8666672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585 (or 579 counting only the distinct ones).

The product of its digits is 145152, while the sum is 41.

The square root of 8666672 is about 2943.9211945974. The cubic root of 8666672 is about 205.4080470599.

The spelling of 8666672 in words is "eight million, six hundred sixty-six thousand, six hundred seventy-two".