959640 has 64 divisors (see below), whose sum is σ = 3144960. Its totient is φ = 232320.

The previous prime is 959627. The next prime is 959659. The reversal of 959640 is 46959.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

959640 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 15 ways as a sum of consecutive naturals, for example, 957 + ... + 1683.

It is an arithmetic number, because the mean of its divisors is an integer number (49140).

2⁹⁵⁹⁶⁴⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 959640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1572480).

959640 is an abundant number, since it is smaller than the sum of its proper divisors (2185320).

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

959640 is a wasteful number, since it uses less digits than its factorization.

959640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 752 (or 748 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 959640 is about 979.6121681564. The cubic root of 959640 is about 98.6361503711.

The spelling of 959640 in words is "nine hundred fifty-nine thousand, six hundred forty".