336640 has 36 divisors (see below), whose sum is σ = 809424. Its totient is φ = 134144.

The previous prime is 336631. The next prime is 336643. The reversal of 336640 is 46633.

336640 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×336640² = 226652979200, which contains 22 as substring.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 336640.

It is not an unprimeable number, because it can be changed into a prime (336643) by changing a digit.

336640 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1149 + ... + 1411.

It is an arithmetic number, because the mean of its divisors is an integer number (22484).

2³³⁶⁶⁴⁰ 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 336640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (404712).

336640 is an abundant number, since it is smaller than the sum of its proper divisors (472784).

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

336640 is an equidigital number, since it uses as much as digits as its factorization.

336640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284 (or 270 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

The square root of 336640 is about 580.2068596630. The cubic root of 336640 is about 69.5646449228.

The spelling of 336640 in words is "three hundred thirty-six thousand, six hundred forty".