2871667 has 4 divisors (see below), whose sum is σ = 2970720. Its totient is φ = 2772616.

The previous prime is 2871643. The next prime is 2871689. The reversal of 2871667 is 7661782.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7661782 = 2 ⋅3830891.

It is a cyclic number.

It is not a de Polignac number, because 2871667 - 2¹⁹ = 2347379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2871367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49483 + ... + 49540.

It is an arithmetic number, because the mean of its divisors is an integer number (742680).

2^2871667 is an apocalyptic number.

2871667 is a deficient number, since it is larger than the sum of its proper divisors (99053).

2871667 is an equidigital number, since it uses as much as digits as its factorization.

2871667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99052.

The product of its digits is 28224, while the sum is 37.

The square root of 2871667 is about 1694.5993626813. The cubic root of 2871667 is about 142.1383792890.

The spelling of 2871667 in words is "two million, eight hundred seventy-one thousand, six hundred sixty-seven".