8640672 has 24 divisors (see below), whose sum is σ = 22682016. Its totient is φ = 2880192.

The previous prime is 8640601. The next prime is 8640679. The reversal of 8640672 is 2760468.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-3 number, since 3×8640672³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (8640679) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44908 + ... + 45099.

It is an arithmetic number, because the mean of its divisors is an integer number (945084).

Almost surely, 2^8640672 is an apocalyptic number.

It is an amenable number.

8640672 is an abundant number, since it is smaller than the sum of its proper divisors (14041344).

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

8640672 is a wasteful number, since it uses less digits than its factorization.

8640672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90020 (or 90012 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 8640672 is about 2939.5019986385. The cubic root of 8640672 is about 205.2024333885.

The spelling of 8640672 in words is "eight million, six hundred forty thousand, six hundred seventy-two".