2231606 has 8 divisors (see below), whose sum is σ = 3604944. Its totient is φ = 1029960.

The previous prime is 2231599. The next prime is 2231609. The reversal of 2231606 is 6061322.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×2231606³ = 33340631074293279048, which contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231609) 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, 42890 + ... + 42941.

It is an arithmetic number, because the mean of its divisors is an integer number (450618).

2^2231606 is an apocalyptic number.

2231606 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2231606 is a deficient number, since it is larger than the sum of its proper divisors (1373338).

2231606 is a wasteful number, since it uses less digits than its factorization.

2231606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85846.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 2231606 is about 1493.8560840991. The cubic root of 2231606 is about 130.6790113401.

Adding to 2231606 its reverse (6061322), we get a palindrome (8292928).

The spelling of 2231606 in words is "two million, two hundred thirty-one thousand, six hundred six".