623943 has 10 divisors (see below), whose sum is σ = 932184. Its totient is φ = 415908.

The previous prime is 623933. The next prime is 623947. The reversal of 623943 is 349326.

623943 is an esthetic number in base 6, because in such base its adjacent digits differ by 1.

It is not a de Polignac number, because 623943 - 2⁶ = 623879 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a d-powerful number, because it can be written as 6³ + 2¹⁹ + 9⁵ + 3⁹ + 4⁵ + 3⁹ .

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 (623947) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3771 + ... + 3932.

2⁶²³⁹⁴³ is an apocalyptic number.

623943 is a deficient number, since it is larger than the sum of its proper divisors (308241).

623943 is an equidigital number, since it uses as much as digits as its factorization.

623943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7715 (or 7706 counting only the distinct ones).

The product of its digits is 3888, while the sum is 27.

The square root of 623943 is about 789.9006266614. The cubic root of 623943 is about 85.4505716151.

It can be divided in two parts, 62 and 3943, that added together give a triangular number (4005 = T₈₉).

The spelling of 623943 in words is "six hundred twenty-three thousand, nine hundred forty-three".