335681 has 2 divisors, whose sum is σ = 335682. Its totient is φ = 335680.

The previous prime is 335669. The next prime is 335689. The reversal of 335681 is 186533.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 255025 + 80656 = 505^2 + 284^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-335681 is a prime.

It is a super-2 number, since 2×335681² = 225363467522, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 335681.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 335681.

It is not a weakly prime, because it can be changed into another prime (335689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 167840 + 167841.

It is an arithmetic number, because the mean of its divisors is an integer number (167841).

2³³⁵⁶⁸¹ is an apocalyptic number.

It is an amenable number.

335681 is a deficient number, since it is larger than the sum of its proper divisors (1).

335681 is an equidigital number, since it uses as much as digits as its factorization.

335681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 26.

The square root of 335681 is about 579.3798408644. The cubic root of 335681 is about 69.4985248898.

The spelling of 335681 in words is "three hundred thirty-five thousand, six hundred eighty-one".