346705109 has 2 divisors, whose sum is σ = 346705110. Its totient is φ = 346705108.

The previous prime is 346705097. The next prime is 346705127. The reversal of 346705109 is 901507643.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 200222500 + 146482609 = 14150^2 + 12103^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-346705109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (346705189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 173352554 + 173352555.

It is an arithmetic number, because the mean of its divisors is an integer number (173352555).

Almost surely, 2^346705109 is an apocalyptic number.

It is an amenable number.

346705109 is a deficient number, since it is larger than the sum of its proper divisors (1).

346705109 is an equidigital number, since it uses as much as digits as its factorization.

346705109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 346705109 is about 18620.0190386584. The cubic root of 346705109 is about 702.5114609141.

The spelling of 346705109 in words is "three hundred forty-six million, seven hundred five thousand, one hundred nine".