335689 has 2 divisors, whose sum is σ = 335690. Its totient is φ = 335688.

The previous prime is 335681. The next prime is 335693. The reversal of 335689 is 986533.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 233289 + 102400 = 483^2 + 320^2 .

It is an emirp because it is prime and its reverse (986533) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 335689 - 2³ = 335681 is a prime.

It is a super-2 number, since 2×335689² = 225374209442, which contains 22 as substring.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (335681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 167844 + 167845.

It is an arithmetic number, because the mean of its divisors is an integer number (167845).

2³³⁵⁶⁸⁹ is an apocalyptic number.

It is an amenable number.

335689 is a deficient number, since it is larger than the sum of its proper divisors (1).

335689 is an equidigital number, since it uses as much as digits as its factorization.

335689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19440, while the sum is 34.

The square root of 335689 is about 579.3867447569. The cubic root of 335689 is about 69.4990769851.

It can be divided in two parts, 335 and 689, that added together give a 10-th power (1024 = 2¹⁰).

The spelling of 335689 in words is "three hundred thirty-five thousand, six hundred eighty-nine".