344540643 has 8 divisors (see below), whose sum is σ = 460837968. Its totient is φ = 228968544.

The previous prime is 344540641. The next prime is 344540659. The reversal of 344540643 is 346045443.

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

It is not a de Polignac number, because 344540643 - 2¹ = 344540641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (344540641) 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, 180196 + ... + 182097.

It is an arithmetic number, because the mean of its divisors is an integer number (57604746).

Almost surely, 2^344540643 is an apocalyptic number.

344540643 is a deficient number, since it is larger than the sum of its proper divisors (116297325).

344540643 is a wasteful number, since it uses less digits than its factorization.

344540643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362613.

The product of its (nonzero) digits is 69120, while the sum is 33.

The square root of 344540643 is about 18561.8060274317. The cubic root of 344540643 is about 701.0464911918.

The spelling of 344540643 in words is "three hundred forty-four million, five hundred forty thousand, six hundred forty-three".