343663 has 4 divisors (see below), whose sum is σ = 345168. Its totient is φ = 342160.

The previous prime is 343661. The next prime is 343667. The reversal of 343663 is 366343.

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

It is a cyclic number.

It is not a de Polignac number, because 343663 - 2¹ = 343661 is a prime.

It is a Duffinian number.

It is a congruent number.

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

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 331 + ... + 892.

It is an arithmetic number, because the mean of its divisors is an integer number (86292).

2³⁴³⁶⁶³ is an apocalyptic number.

343663 is a deficient number, since it is larger than the sum of its proper divisors (1505).

343663 is a wasteful number, since it uses less digits than its factorization.

343663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1504.

The product of its digits is 3888, while the sum is 25.

The square root of 343663 is about 586.2277714336. The cubic root of 343663 is about 70.0450730121.

The spelling of 343663 in words is "three hundred forty-three thousand, six hundred sixty-three".