623843 has 4 divisors (see below), whose sum is σ = 680568. Its totient is φ = 567120.

The previous prime is 623839. The next prime is 623851. The reversal of 623843 is 348326.

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 623843 - 2² = 623839 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (623803) 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, 28346 + ... + 28367.

It is an arithmetic number, because the mean of its divisors is an integer number (170142).

2⁶²³⁸⁴³ is an apocalyptic number.

623843 is a deficient number, since it is larger than the sum of its proper divisors (56725).

623843 is a wasteful number, since it uses less digits than its factorization.

623843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56724.

The product of its digits is 3456, while the sum is 26.

The square root of 623843 is about 789.8373250233. The cubic root of 623843 is about 85.4460062870.

The spelling of 623843 in words is "six hundred twenty-three thousand, eight hundred forty-three".