2066431 has 4 divisors (see below), whose sum is σ = 2084832. Its totient is φ = 2048032.

The previous prime is 2066419. The next prime is 2066437. The reversal of 2066431 is 1346602.

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 2066431 - 2⁵ = 2066399 is a prime.

It is a super-2 number, since 2×2066431² = 8540274155522, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2066437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9031 + ... + 9256.

It is an arithmetic number, because the mean of its divisors is an integer number (521208).

2^2066431 is an apocalyptic number.

2066431 is a deficient number, since it is larger than the sum of its proper divisors (18401).

2066431 is a wasteful number, since it uses less digits than its factorization.

2066431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18400.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 2066431 is about 1437.5086086699. The cubic root of 2066431 is about 127.3719026156.

The spelling of 2066431 in words is "two million, sixty-six thousand, four hundred thirty-one".