343947606689 has 2 divisors, whose sum is σ = 343947606690. Its totient is φ = 343947606688.

The previous prime is 343947606683. The next prime is 343947606701. The reversal of 343947606689 is 986606749343.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 180440597089 + 163507009600 = 424783^2 + 404360^2 .

It is an emirp because it is prime and its reverse (986606749343) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 343947606689 - 2¹⁶ = 343947541153 is a prime.

It is a super-2 number, since 2×343947606689² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (343947606683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171973803344 + 171973803345.

It is an arithmetic number, because the mean of its divisors is an integer number (171973803345).

Almost surely, 2^343947606689 is an apocalyptic number.

It is an amenable number.

343947606689 is a deficient number, since it is larger than the sum of its proper divisors (1).

343947606689 is an equidigital number, since it uses as much as digits as its factorization.

343947606689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 141087744, while the sum is 65.

The spelling of 343947606689 in words is "three hundred forty-three billion, nine hundred forty-seven million, six hundred six thousand, six hundred eighty-nine".