640110 has 32 divisors (see below), whose sum is σ = 1618560. Its totient is φ = 161568.

The previous prime is 640109. The next prime is 640121. The reversal of 640110 is 11046.

640110 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 640110.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9 + ... + 1131.

It is an arithmetic number, because the mean of its divisors is an integer number (50580).

2⁶⁴⁰¹¹⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 640110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (809280).

640110 is an abundant number, since it is smaller than the sum of its proper divisors (978450).

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

640110 is a wasteful number, since it uses less digits than its factorization.

640110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1152.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 640110 is about 800.0687470462. The cubic root of 640110 is about 86.1823245646.

Adding to 640110 its reverse (11046), we get a palindrome (651156).

The spelling of 640110 in words is "six hundred forty thousand, one hundred ten".