2566671 has 8 divisors (see below), whose sum is σ = 3461040. Its totient is φ = 1691712.

The previous prime is 2566667. The next prime is 2566673. The reversal of 2566671 is 1766652.

2566671 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 2566671 - 2² = 2566667 is a prime.

2566671 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2566673) 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 7 ways as a sum of consecutive naturals, for example, 4540 + ... + 5073.

It is an arithmetic number, because the mean of its divisors is an integer number (432630).

2^2566671 is an apocalyptic number.

2566671 is a deficient number, since it is larger than the sum of its proper divisors (894369).

2566671 is an equidigital number, since it uses as much as digits as its factorization.

2566671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9705.

The product of its digits is 15120, while the sum is 33.

The square root of 2566671 is about 1602.0833311660. The cubic root of 2566671 is about 136.9167981851.

The spelling of 2566671 in words is "two million, five hundred sixty-six thousand, six hundred seventy-one".