2066423 has 4 divisors (see below), whose sum is σ = 2070408. Its totient is φ = 2062440.

The previous prime is 2066419. The next prime is 2066437. The reversal of 2066423 is 3246602.

Added to its reverse (3246602) it gives a square (5313025 = 2305²).

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2066423 - 2² = 2066419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2066443) 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, 1073 + ... + 2298.

It is an arithmetic number, because the mean of its divisors is an integer number (517602).

2^2066423 is an apocalyptic number.

2066423 is a deficient number, since it is larger than the sum of its proper divisors (3985).

2066423 is an equidigital number, since it uses as much as digits as its factorization.

2066423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3984.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 2066423 is about 1437.5058260752. The cubic root of 2066423 is about 127.3717382458.

Adding to 2066423 its reverse (3246602), we get a square (5313025 = 2305²).

The spelling of 2066423 in words is "two million, sixty-six thousand, four hundred twenty-three".