10643 has 4 divisors (see below), whose sum is σ = 11040. Its totient is φ = 10248.

The previous prime is 10639. The next prime is 10651. The reversal of 10643 is 34601.

10643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34601 = 7 ⋅4943.

It is a cyclic number.

It is not a de Polignac number, because 10643 - 2² = 10639 is a prime.

It is a super-2 number, since 2×10643² = 226546898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155 + ... + 212.

It is an arithmetic number, because the mean of its divisors is an integer number (2760).

2¹⁰⁶⁴³ is an apocalyptic number.

10643 is a deficient number, since it is larger than the sum of its proper divisors (397).

10643 is an equidigital number, since it uses as much as digits as its factorization.

10643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 10643 is about 103.1649165172. The cubic root of 10643 is about 21.9965559347.

The spelling of 10643 in words is "ten thousand, six hundred forty-three".