345205727 has 2 divisors, whose sum is σ = 345205728. Its totient is φ = 345205726.

The previous prime is 345205697. The next prime is 345205769. The reversal of 345205727 is 727502543.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 345205727 - 2¹² = 345201631 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345205787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172602863 + 172602864.

It is an arithmetic number, because the mean of its divisors is an integer number (172602864).

Almost surely, 2^345205727 is an apocalyptic number.

345205727 is a deficient number, since it is larger than the sum of its proper divisors (1).

345205727 is an equidigital number, since it uses as much as digits as its factorization.

345205727 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58800, while the sum is 35.

The square root of 345205727 is about 18579.7127803419. The cubic root of 345205727 is about 701.4972895941.

The spelling of 345205727 in words is "three hundred forty-five million, two hundred five thousand, seven hundred twenty-seven".