340864 has 16 divisors (see below), whose sum is σ = 679320. Its totient is φ = 170368.

The previous prime is 340859. The next prime is 340877. The reversal of 340864 is 468043.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is an unprimeable number.

340864 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1204 + ... + 1459.

2³⁴⁰⁸⁶⁴ is an apocalyptic number.

It is an amenable number.

340864 is a deficient number, since it is larger than the sum of its proper divisors (338456).

340864 is an equidigital number, since it uses as much as digits as its factorization.

340864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2677 (or 2665 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 340864 is about 583.8355932966. The cubic root of 340864 is about 69.8543912030.

The spelling of 340864 in words is "three hundred forty thousand, eight hundred sixty-four".