345636349 has 2 divisors, whose sum is σ = 345636350. Its totient is φ = 345636348.

The previous prime is 345636331. The next prime is 345636371. The reversal of 345636349 is 943636543.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 299532249 + 46104100 = 17307^2 + 6790^2 .

It is a cyclic number.

It is not a de Polignac number, because 345636349 - 2¹⁵ = 345603581 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345636749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172818174 + 172818175.

It is an arithmetic number, because the mean of its divisors is an integer number (172818175).

Almost surely, 2^345636349 is an apocalyptic number.

It is an amenable number.

345636349 is a deficient number, since it is larger than the sum of its proper divisors (1).

345636349 is an equidigital number, since it uses as much as digits as its factorization.

345636349 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 345636349 is about 18591.2976685330. The cubic root of 345636349 is about 701.7888593458.

The spelling of 345636349 in words is "three hundred forty-five million, six hundred thirty-six thousand, three hundred forty-nine".