340658 has 8 divisors (see below), whose sum is σ = 518400. Its totient is φ = 167860.

The previous prime is 340657. The next prime is 340661. The reversal of 340658 is 856043.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (340657) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1058 + ... + 1341.

It is an arithmetic number, because the mean of its divisors is an integer number (64800).

2³⁴⁰⁶⁵⁸ is an apocalyptic number.

340658 is a deficient number, since it is larger than the sum of its proper divisors (177742).

340658 is a wasteful number, since it uses less digits than its factorization.

340658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2472.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 340658 is about 583.6591471056. The cubic root of 340658 is about 69.8403162792.

The spelling of 340658 in words is "three hundred forty thousand, six hundred fifty-eight".