343669 has 4 divisors (see below), whose sum is σ = 344844. Its totient is φ = 342496.

The previous prime is 343667. The next prime is 343687. The reversal of 343669 is 966343.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 18769 + 324900 = 137^2 + 570^2 .

It is a cyclic number.

It is not a de Polignac number, because 343669 - 2¹ = 343667 is a prime.

It is a super-2 number, since 2×343669² = 236216763122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) 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 self number, because there is not a number n which added to its sum of digits gives 343669.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 343669.

It is not an unprimeable number, because it can be changed into a prime (343661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 249 + ... + 865.

It is an arithmetic number, because the mean of its divisors is an integer number (86211).

2³⁴³⁶⁶⁹ is an apocalyptic number.

It is an amenable number.

343669 is a deficient number, since it is larger than the sum of its proper divisors (1175).

343669 is an equidigital number, since it uses as much as digits as its factorization.

343669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1174.

The product of its digits is 11664, while the sum is 31.

The square root of 343669 is about 586.2328888761. The cubic root of 343669 is about 70.0454806478.

The spelling of 343669 in words is "three hundred forty-three thousand, six hundred sixty-nine".