345727247 has 2 divisors, whose sum is σ = 345727248. Its totient is φ = 345727246.

The previous prime is 345727231. The next prime is 345727259. The reversal of 345727247 is 742727543.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 345727247 - 2⁴ = 345727231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345723247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172863623 + 172863624.

It is an arithmetic number, because the mean of its divisors is an integer number (172863624).

Almost surely, 2^345727247 is an apocalyptic number.

345727247 is a deficient number, since it is larger than the sum of its proper divisors (1).

345727247 is an equidigital number, since it uses as much as digits as its factorization.

345727247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 329280, while the sum is 41.

The square root of 345727247 is about 18593.7421462168. The cubic root of 345727247 is about 701.8503744928.

The spelling of 345727247 in words is "three hundred forty-five million, seven hundred twenty-seven thousand, two hundred forty-seven".