345768673 has 2 divisors, whose sum is σ = 345768674. Its totient is φ = 345768672.

The previous prime is 345768671. The next prime is 345768691. The reversal of 345768673 is 376867543.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 228977424 + 116791249 = 15132^2 + 10807^2 .

It is a cyclic number.

It is not a de Polignac number, because 345768673 - 2¹ = 345768671 is a prime.

Together with 345768671, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (345768671) 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, 172884336 + 172884337.

It is an arithmetic number, because the mean of its divisors is an integer number (172884337).

Almost surely, 2^345768673 is an apocalyptic number.

It is an amenable number.

345768673 is a deficient number, since it is larger than the sum of its proper divisors (1).

345768673 is an equidigital number, since it uses as much as digits as its factorization.

345768673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2540160, while the sum is 49.

The square root of 345768673 is about 18594.8560897900. The cubic root of 345768673 is about 701.8784059277.

The spelling of 345768673 in words is "three hundred forty-five million, seven hundred sixty-eight thousand, six hundred seventy-three".