669343 has 4 divisors (see below), whose sum is σ = 671328. Its totient is φ = 667360.

The previous prime is 669329. The next prime is 669359. The reversal of 669343 is 343966.

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 669343 - 2⁵ = 669311 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669943) 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, 346 + ... + 1207.

It is an arithmetic number, because the mean of its divisors is an integer number (167832).

2⁶⁶⁹³⁴³ is an apocalyptic number.

669343 is a deficient number, since it is larger than the sum of its proper divisors (1985).

669343 is a wasteful number, since it uses less digits than its factorization.

669343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1984.

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

The square root of 669343 is about 818.1338521293. The cubic root of 669343 is about 87.4747900163.

It can be divided in two parts, 66 and 9343, that added together give a square (9409 = 97²).

The spelling of 669343 in words is "six hundred sixty-nine thousand, three hundred forty-three".