340643346 has 16 divisors (see below), whose sum is σ = 682600608. Its totient is φ = 113328800.

The previous prime is 340643341. The next prime is 340643383. The reversal of 340643346 is 643346043.

It is not an unprimeable number, because it can be changed into a prime (340643341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51360 + ... + 57611.

It is an arithmetic number, because the mean of its divisors is an integer number (42662538).

Almost surely, 2^340643346 is an apocalyptic number.

340643346 is an abundant number, since it is smaller than the sum of its proper divisors (341957262).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

340643346 is a wasteful number, since it uses less digits than its factorization.

340643346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109497.

The product of its (nonzero) digits is 62208, while the sum is 33.

The square root of 340643346 is about 18456.5258377626. The cubic root of 340643346 is about 698.3931483040.

Adding to 340643346 its reverse (643346043), we get a palindrome (983989389).

The spelling of 340643346 in words is "three hundred forty million, six hundred forty-three thousand, three hundred forty-six".