667843 has 8 divisors (see below), whose sum is σ = 736560. Its totient is φ = 600480.

The previous prime is 667837. The next prime is 667859. The reversal of 667843 is 348766.

667843 is nontrivially palindromic in base 15.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 667843 - 2¹⁷ = 536771 is a prime.

667843 is an undulating number in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 667799 and 667808.

It is not an unprimeable number, because it can be changed into a prime (667883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 921 + ... + 1477.

It is an arithmetic number, because the mean of its divisors is an integer number (92070).

2⁶⁶⁷⁸⁴³ is an apocalyptic number.

667843 is a deficient number, since it is larger than the sum of its proper divisors (68717).

667843 is a wasteful number, since it uses less digits than its factorization.

667843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677.

The product of its digits is 24192, while the sum is 34.

The square root of 667843 is about 817.2166175501. The cubic root of 667843 is about 87.4093973736.

The spelling of 667843 in words is "six hundred sixty-seven thousand, eight hundred forty-three".