8440660 has 24 divisors (see below), whose sum is σ = 17992800. Its totient is φ = 3325344.

The previous prime is 8440639. The next prime is 8440667. The reversal of 8440660 is 660448.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8440667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1810 + ... + 4489.

It is an arithmetic number, because the mean of its divisors is an integer number (749700).

Almost surely, 2^8440660 is an apocalyptic number.

It is an amenable number.

8440660 is an abundant number, since it is smaller than the sum of its proper divisors (9552140).

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

8440660 is a wasteful number, since it uses less digits than its factorization.

8440660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6375 (or 6373 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 8440660 is about 2905.2813977307. The cubic root of 8440660 is about 203.6067330641.

The spelling of 8440660 in words is "eight million, four hundred forty thousand, six hundred sixty".