345663349 has 2 divisors, whose sum is σ = 345663350. Its totient is φ = 345663348.

The previous prime is 345663323. The next prime is 345663379. The reversal of 345663349 is 943366543.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 310640625 + 35022724 = 17625^2 + 5918^2 .

It is a cyclic number.

It is not a de Polignac number, because 345663349 - 2⁵ = 345663317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345663319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172831674 + 172831675.

It is an arithmetic number, because the mean of its divisors is an integer number (172831675).

Almost surely, 2^345663349 is an apocalyptic number.

It is an amenable number.

345663349 is a deficient number, since it is larger than the sum of its proper divisors (1).

345663349 is an equidigital number, since it uses as much as digits as its factorization.

345663349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 699840, while the sum is 43.

The square root of 345663349 is about 18592.0238005441. The cubic root of 345663349 is about 701.8071326996.

The spelling of 345663349 in words is "three hundred forty-five million, six hundred sixty-three thousand, three hundred forty-nine".