340612643 has 8 divisors (see below), whose sum is σ = 389410560. Its totient is φ = 291849480.

The previous prime is 340612633. The next prime is 340612667. The reversal of 340612643 is 346216043.

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

It is a cyclic number.

It is not a de Polignac number, because 340612643 - 2⁸ = 340612387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (340612633) 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, 17648 + ... + 31506.

It is an arithmetic number, because the mean of its divisors is an integer number (48676320).

Almost surely, 2^340612643 is an apocalyptic number.

340612643 is a deficient number, since it is larger than the sum of its proper divisors (48797917).

340612643 is a wasteful number, since it uses less digits than its factorization.

340612643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17377.

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 340612643 is about 18455.6940535977. The cubic root of 340612643 is about 698.3721650583.

Adding to 340612643 its reverse (346216043), we get a palindrome (686828686).

The spelling of 340612643 in words is "three hundred forty million, six hundred twelve thousand, six hundred forty-three".