43606 has 4 divisors (see below), whose sum is σ = 65412. Its totient is φ = 21802.

The previous prime is 43597. The next prime is 43607. The reversal of 43606 is 60634.

43606 = T₁₆₉ + T₁₇₀ + T₁₇₁.

It is a happy number.

43606 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.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10900 + ... + 10903.

It is an arithmetic number, because the mean of its divisors is an integer number (16353).

2⁴³⁶⁰⁶ is an apocalyptic number.

43606 is the 171-st centered triangular number.

43606 is a deficient number, since it is larger than the sum of its proper divisors (21806).

43606 is a wasteful number, since it uses less digits than its factorization.

43606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21805.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 43606 is about 208.8204970782. The cubic root of 43606 is about 35.1977917003.

The spelling of 43606 in words is "forty-three thousand, six hundred six".