349080565 has 4 divisors (see below), whose sum is σ = 418896684. Its totient is φ = 279264448.

The previous prime is 349080541. The next prime is 349080587. The reversal of 349080565 is 565080943.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 236359876 + 112720689 = 15374^2 + 10617^2 .

It is a cyclic number.

It is not a de Polignac number, because 349080565 - 2¹⁷ = 348949493 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34908052 + ... + 34908061.

It is an arithmetic number, because the mean of its divisors is an integer number (104724171).

Almost surely, 2^349080565 is an apocalyptic number.

It is an amenable number.

349080565 is a deficient number, since it is larger than the sum of its proper divisors (69816119).

349080565 is an equidigital number, since it uses as much as digits as its factorization.

349080565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69816118.

The product of its (nonzero) digits is 129600, while the sum is 40.

The square root of 349080565 is about 18683.6978406310. The cubic root of 349080565 is about 704.1122336614.

The spelling of 349080565 in words is "three hundred forty-nine million, eighty thousand, five hundred sixty-five".