2667671 has 4 divisors (see below), whose sum is σ = 2673144. Its totient is φ = 2662200.

The previous prime is 2667667. The next prime is 2667689. The reversal of 2667671 is 1767662.

2667671 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2667671 - 2² = 2667667 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 (2667601) 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 3 ways as a sum of consecutive naturals, for example, 1925 + ... + 3006.

It is an arithmetic number, because the mean of its divisors is an integer number (668286).

2^2667671 is an apocalyptic number.

2667671 is a deficient number, since it is larger than the sum of its proper divisors (5473).

2667671 is an equidigital number, since it uses as much as digits as its factorization.

2667671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5472.

The product of its digits is 21168, while the sum is 35.

The square root of 2667671 is about 1633.3006459314. The cubic root of 2667671 is about 138.6896618310.

Subtracting from 2667671 its reverse (1767662), we obtain a palindrome (900009).

The spelling of 2667671 in words is "two million, six hundred sixty-seven thousand, six hundred seventy-one".