339665 has 4 divisors (see below), whose sum is σ = 407604. Its totient is φ = 271728.

The previous prime is 339659. The next prime is 339671. The reversal of 339665 is 566933.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 566933 = 17 ⋅33349.

It is an interprime number because it is at equal distance from previous prime (339659) and next prime (339671).

It can be written as a sum of positive squares in 2 ways, for example, as 229441 + 110224 = 479^2 + 332^2 .

It is a cyclic number.

It is not a de Polignac number, because 339665 - 2⁴ = 339649 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 339665.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33962 + ... + 33971.

It is an arithmetic number, because the mean of its divisors is an integer number (101901).

2³³⁹⁶⁶⁵ is an apocalyptic number.

It is an amenable number.

339665 is a deficient number, since it is larger than the sum of its proper divisors (67939).

339665 is an equidigital number, since it uses as much as digits as its factorization.

339665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67938.

The product of its digits is 14580, while the sum is 32.

The square root of 339665 is about 582.8078585606. The cubic root of 339665 is about 69.7723899634.

The spelling of 339665 in words is "three hundred thirty-nine thousand, six hundred sixty-five".