344557643 has 2 divisors, whose sum is σ = 344557644. Its totient is φ = 344557642.

The previous prime is 344557627. The next prime is 344557657. The reversal of 344557643 is 346755443.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 344557643 - 2⁴ = 344557627 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 344557643.

It is not a weakly prime, because it can be changed into another prime (344557663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172278821 + 172278822.

It is an arithmetic number, because the mean of its divisors is an integer number (172278822).

Almost surely, 2^344557643 is an apocalyptic number.

344557643 is a deficient number, since it is larger than the sum of its proper divisors (1).

344557643 is an equidigital number, since it uses as much as digits as its factorization.

344557643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 604800, while the sum is 41.

The square root of 344557643 is about 18562.2639513611. The cubic root of 344557643 is about 701.0580211275.

The spelling of 344557643 in words is "three hundred forty-four million, five hundred fifty-seven thousand, six hundred forty-three".