340068643 has 8 divisors (see below), whose sum is σ = 343027440. Its totient is φ = 337117440.

The previous prime is 340068623. The next prime is 340068649. The reversal of 340068643 is 346860043.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-340068643 is a prime.

It is a super-2 number, since 2×340068643² = 231293363903722898, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 340068599 and 340068608.

It is not an unprimeable number, because it can be changed into a prime (340068649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121071 + ... + 123847.

It is an arithmetic number, because the mean of its divisors is an integer number (42878430).

Almost surely, 2^340068643 is an apocalyptic number.

340068643 is a deficient number, since it is larger than the sum of its proper divisors (2958797).

340068643 is a wasteful number, since it uses less digits than its factorization.

340068643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3797.

The product of its (nonzero) digits is 41472, while the sum is 34.

The square root of 340068643 is about 18440.9501653250. The cubic root of 340068643 is about 698.0001717282. Note that the first 3 decimals are identical.

The spelling of 340068643 in words is "three hundred forty million, sixty-eight thousand, six hundred forty-three".