340556 has 12 divisors (see below), whose sum is σ = 627480. Its totient is φ = 161280.

The previous prime is 340541. The next prime is 340559. The reversal of 340556 is 655043.

It is not an unprimeable number, because it can be changed into a prime (340559) 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, 2165 + ... + 2316.

It is an arithmetic number, because the mean of its divisors is an integer number (52290).

2³⁴⁰⁵⁵⁶ is an apocalyptic number.

It is an amenable number.

340556 is a deficient number, since it is larger than the sum of its proper divisors (286924).

340556 is a wasteful number, since it uses less digits than its factorization.

340556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4504 (or 4502 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 340556 is about 583.5717607972. The cubic root of 340556 is about 69.8333450418.

Adding to 340556 its reverse (655043), we get a palindrome (995599).

The spelling of 340556 in words is "three hundred forty thousand, five hundred fifty-six".