345412673 has 2 divisors, whose sum is σ = 345412674. Its totient is φ = 345412672.

The previous prime is 345412631. The next prime is 345412703. The reversal of 345412673 is 376214543.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 239878144 + 105534529 = 15488^2 + 10273^2 .

It is a cyclic number.

It is not a de Polignac number, because 345412673 - 2¹² = 345408577 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (345412603) 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, 172706336 + 172706337.

It is an arithmetic number, because the mean of its divisors is an integer number (172706337).

Almost surely, 2^345412673 is an apocalyptic number.

It is an amenable number.

345412673 is a deficient number, since it is larger than the sum of its proper divisors (1).

345412673 is an equidigital number, since it uses as much as digits as its factorization.

345412673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 35.

The square root of 345412673 is about 18585.2810847724. The cubic root of 345412673 is about 701.6374408594.

The spelling of 345412673 in words is "three hundred forty-five million, four hundred twelve thousand, six hundred seventy-three".