344746643 has 4 divisors (see below), whose sum is σ = 345432528. Its totient is φ = 344060760.

The previous prime is 344746639. The next prime is 344746667. The reversal of 344746643 is 346647443.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 344746643 - 2² = 344746639 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 344746643.

It is not an unprimeable number, because it can be changed into a prime (344746603) 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 3 ways as a sum of consecutive naturals, for example, 342188 + ... + 343193.

It is an arithmetic number, because the mean of its divisors is an integer number (86358132).

Almost surely, 2^344746643 is an apocalyptic number.

344746643 is a deficient number, since it is larger than the sum of its proper divisors (685885).

344746643 is an equidigital number, since it uses as much as digits as its factorization.

344746643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685884.

The product of its digits is 580608, while the sum is 41.

The square root of 344746643 is about 18567.3542272452. The cubic root of 344746643 is about 701.1861813442.

The spelling of 344746643 in words is "three hundred forty-four million, seven hundred forty-six thousand, six hundred forty-three".