339661 has 4 divisors (see below), whose sum is σ = 388192. Its totient is φ = 291132.

The previous prime is 339659. The next prime is 339671. The reversal of 339661 is 166933.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 166933 = 13 ⋅12841.

It is a cyclic number.

It is not a de Polignac number, because 339661 - 2¹ = 339659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (339601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24255 + ... + 24268.

It is an arithmetic number, because the mean of its divisors is an integer number (97048).

2³³⁹⁶⁶¹ is an apocalyptic number.

It is an amenable number.

339661 is a deficient number, since it is larger than the sum of its proper divisors (48531).

339661 is an equidigital number, since it uses as much as digits as its factorization.

339661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48530.

The product of its digits is 2916, while the sum is 28.

The square root of 339661 is about 582.8044268878. The cubic root of 339661 is about 69.7721160753.

It can be divided in two parts, 339 and 661, that added together give a cube (1000 = 10³).

The spelling of 339661 in words is "three hundred thirty-nine thousand, six hundred sixty-one".