340665 has 16 divisors (see below), whose sum is σ = 587328. Its totient is φ = 167616.

The previous prime is 340661. The next prime is 340687. The reversal of 340665 is 566043.

It is not a de Polignac number, because 340665 - 2² = 340661 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 340665.

It is not an unprimeable number, because it can be changed into a prime (340661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 679 + ... + 1068.

It is an arithmetic number, because the mean of its divisors is an integer number (36708).

2³⁴⁰⁶⁶⁵ is an apocalyptic number.

It is an amenable number.

340665 is a deficient number, since it is larger than the sum of its proper divisors (246663).

340665 is a wasteful number, since it uses less digits than its factorization.

340665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1768.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 340665 is about 583.6651437254. The cubic root of 340665 is about 69.8407946465.

The spelling of 340665 in words is "three hundred forty thousand, six hundred sixty-five".