2066571 has 24 divisors (see below), whose sum is σ = 3407040. Its totient is φ = 1195776.

The previous prime is 2066563. The next prime is 2066579. The reversal of 2066571 is 1756602.

2066571 is a `hidden beast` number, since 2 + 0 + 6 + 657 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (2066563) and next prime (2066579).

It is not a de Polignac number, because 2066571 - 2³ = 2066563 is a prime.

2066571 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2066579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1470 + ... + 2508.

It is an arithmetic number, because the mean of its divisors is an integer number (141960).

2^2066571 is an apocalyptic number.

2066571 is a deficient number, since it is larger than the sum of its proper divisors (1340469).

2066571 is a wasteful number, since it uses less digits than its factorization.

2066571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1075 (or 1072 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 2066571 is about 1437.5573032057. The cubic root of 2066571 is about 127.3747790183.

It can be divided in two parts, 20665 and 71, that added together give a 4-th power (20736 = 12⁴).

The spelling of 2066571 in words is "two million, sixty-six thousand, five hundred seventy-one".