346138669 has 2 divisors, whose sum is σ = 346138670. Its totient is φ = 346138668.

The previous prime is 346138657. The next prime is 346138697. The reversal of 346138669 is 966831643.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 333500644 + 12638025 = 18262^2 + 3555^2 .

It is a cyclic number.

It is not a de Polignac number, because 346138669 - 2²¹ = 344041517 is a prime.

It is a super-2 number, since 2×346138669² = 239623956354183122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (346138069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 173069334 + 173069335.

It is an arithmetic number, because the mean of its divisors is an integer number (173069335).

Almost surely, 2^346138669 is an apocalyptic number.

It is an amenable number.

346138669 is a deficient number, since it is larger than the sum of its proper divisors (1).

346138669 is an equidigital number, since it uses as much as digits as its factorization.

346138669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 559872, while the sum is 46.

The square root of 346138669 is about 18604.8023101564. The cubic root of 346138669 is about 702.1286692285.

The spelling of 346138669 in words is "three hundred forty-six million, one hundred thirty-eight thousand, six hundred sixty-nine".