240847643 has 4 divisors (see below), whose sum is σ = 241021200. Its totient is φ = 240674088.

The previous prime is 240847631. The next prime is 240847679. The reversal of 240847643 is 346748042.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 346748042 = 2 ⋅173374021.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-240847643 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 240847597 and 240847606.

It is not an unprimeable number, because it can be changed into a prime (240847603) 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, 84680 + ... + 87477.

It is an arithmetic number, because the mean of its divisors is an integer number (60255300).

Almost surely, 2^240847643 is an apocalyptic number.

240847643 is a deficient number, since it is larger than the sum of its proper divisors (173557).

240847643 is a wasteful number, since it uses less digits than its factorization.

240847643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173556.

The product of its (nonzero) digits is 129024, while the sum is 38.

The square root of 240847643 is about 15519.2668319093. The cubic root of 240847643 is about 622.1772593018.

The spelling of 240847643 in words is "two hundred forty million, eight hundred forty-seven thousand, six hundred forty-three".