345984643 has 4 divisors (see below), whose sum is σ = 349046568. Its totient is φ = 342922720.

The previous prime is 345984631. The next prime is 345984647. The reversal of 345984643 is 346489543.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-345984643 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 345984593 and 345984602.

It is not an unprimeable number, because it can be changed into a prime (345984647) 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, 1530793 + ... + 1531018.

It is an arithmetic number, because the mean of its divisors is an integer number (87261642).

Almost surely, 2^345984643 is an apocalyptic number.

345984643 is a deficient number, since it is larger than the sum of its proper divisors (3061925).

345984643 is a wasteful number, since it uses less digits than its factorization.

345984643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3061924.

The product of its digits is 1244160, while the sum is 46.

The square root of 345984643 is about 18600.6624344403. The cubic root of 345984643 is about 702.0245085504.

The spelling of 345984643 in words is "three hundred forty-five million, nine hundred eighty-four thousand, six hundred forty-three".