623543 has 8 divisors (see below), whose sum is σ = 676368. Its totient is φ = 572544.

The previous prime is 623537. The next prime is 623563. The reversal of 623543 is 345326.

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 623543 - 2¹⁰ = 622519 is a prime.

It is a d-powerful number, because it can be written as 6³ + 2¹⁵ + 5 + 3¹⁰ + 4³ + 3¹² .

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 305 + ... + 1157.

It is an arithmetic number, because the mean of its divisors is an integer number (84546).

2⁶²³⁵⁴³ is an apocalyptic number.

623543 is a deficient number, since it is larger than the sum of its proper divisors (52825).

623543 is a wasteful number, since it uses less digits than its factorization.

623543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913.

The product of its digits is 2160, while the sum is 23.

The square root of 623543 is about 789.6473896620. The cubic root of 623543 is about 85.4323073745.

Adding to 623543 its reverse (345326), we get a palindrome (968869).

The spelling of 623543 in words is "six hundred twenty-three thousand, five hundred forty-three".