440660 has 24 divisors (see below), whose sum is σ = 1010016. Its totient is φ = 160160.

The previous prime is 440653. The next prime is 440669. The reversal of 440660 is 66044.

It is a Harshad number since it is a multiple of its sum of digits (20).

440660 is a modest number, since divided by 660 gives 440 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440669) by changing a digit.

440660 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 782 + ... + 1221.

It is an arithmetic number, because the mean of its divisors is an integer number (42084).

2⁴⁴⁰⁶⁶⁰ is an apocalyptic number.

It is an amenable number.

440660 is an abundant number, since it is smaller than the sum of its proper divisors (569356).

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

440660 is a wasteful number, since it uses less digits than its factorization.

440660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2023 (or 2021 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 440660 is about 663.8222653693. The cubic root of 440660 is about 76.0970597409.

The spelling of 440660 in words is "four hundred forty thousand, six hundred sixty".