344146643 has 4 divisors (see below), whose sum is σ = 351468960. Its totient is φ = 336824328.

The previous prime is 344146637. The next prime is 344146679. The reversal of 344146643 is 346641443.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 346641443 = 8209 ⋅42227.

It is a cyclic number.

It is not a de Polignac number, because 344146643 - 2²² = 339952339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (344146613) 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, 3661088 + ... + 3661181.

It is an arithmetic number, because the mean of its divisors is an integer number (87867240).

Almost surely, 2^344146643 is an apocalyptic number.

344146643 is a deficient number, since it is larger than the sum of its proper divisors (7322317).

344146643 is an equidigital number, since it uses as much as digits as its factorization.

344146643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7322316.

The product of its digits is 82944, while the sum is 35.

The square root of 344146643 is about 18551.1898001179. The cubic root of 344146643 is about 700.7791616544.

The spelling of 344146643 in words is "three hundred forty-four million, one hundred forty-six thousand, six hundred forty-three".