343835665 has 4 divisors (see below), whose sum is σ = 412602804. Its totient is φ = 275068528.

The previous prime is 343835617. The next prime is 343835689. The reversal of 343835665 is 566538343.

343835665 is an esthetic number in base 9, because in such base its adjacent digits differ by 1.

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 115584001 + 228251664 = 10751^2 + 15108^2 .

It is a cyclic number.

It is not a de Polignac number, because 343835665 - 2¹⁷ = 343704593 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34383562 + ... + 34383571.

It is an arithmetic number, because the mean of its divisors is an integer number (103150701).

Almost surely, 2^343835665 is an apocalyptic number.

It is an amenable number.

343835665 is a deficient number, since it is larger than the sum of its proper divisors (68767139).

343835665 is an equidigital number, since it uses as much as digits as its factorization.

343835665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68767138.

The product of its digits is 777600, while the sum is 43.

The square root of 343835665 is about 18542.8062870753. The cubic root of 343835665 is about 700.5680185456.

The spelling of 343835665 in words is "three hundred forty-three million, eight hundred thirty-five thousand, six hundred sixty-five".