344263643 has 4 divisors (see below), whose sum is σ = 350098680. Its totient is φ = 338428608.

The previous prime is 344263639. The next prime is 344263691. The reversal of 344263643 is 346362443.

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 344263643 - 2² = 344263639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (344263043) 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, 2917430 + ... + 2917547.

It is an arithmetic number, because the mean of its divisors is an integer number (87524670).

Almost surely, 2^344263643 is an apocalyptic number.

344263643 is a deficient number, since it is larger than the sum of its proper divisors (5835037).

344263643 is an equidigital number, since it uses as much as digits as its factorization.

344263643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5835036.

The product of its digits is 124416, while the sum is 35.

The square root of 344263643 is about 18554.3429686960. The cubic root of 344263643 is about 700.8585676031.

The spelling of 344263643 in words is "three hundred forty-four million, two hundred sixty-three thousand, six hundred forty-three".