940640 has 24 divisors (see below), whose sum is σ = 2222640. Its totient is φ = 376192.

The previous prime is 940619. The next prime is 940649. The reversal of 940640 is 46049.

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 940640.

It is not an unprimeable number, because it can be changed into a prime (940649) by changing a digit.

940640 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 3 ways as a sum of consecutive naturals, for example, 2780 + ... + 3099.

It is an arithmetic number, because the mean of its divisors is an integer number (92610).

2⁹⁴⁰⁶⁴⁰ is an apocalyptic number.

It is an amenable number.

940640 is an abundant number, since it is smaller than the sum of its proper divisors (1282000).

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

940640 is a wasteful number, since it uses less digits than its factorization.

940640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5894 (or 5886 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 940640 is about 969.8659701216. The cubic root of 940640 is about 97.9808375694.

Adding to 940640 its reverse (46049), we get a palindrome (986689).

The spelling of 940640 in words is "nine hundred forty thousand, six hundred forty".