335640 has 32 divisors (see below), whose sum is σ = 1007280. Its totient is φ = 89472.

The previous prime is 335633. The next prime is 335641. The reversal of 335640 is 46533.

It is a super-2 number, since 2×335640² = 225308419200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (335641) by changing a digit.

335640 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, 1279 + ... + 1518.

2³³⁵⁶⁴⁰ is an apocalyptic number.

335640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

335640 is an abundant number, since it is smaller than the sum of its proper divisors (671640).

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

335640 is a wasteful number, since it uses less digits than its factorization.

335640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2811 (or 2807 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 335640 is about 579.3444571237. The cubic root of 335640 is about 69.4956952633.

The spelling of 335640 in words is "three hundred thirty-five thousand, six hundred forty".