2657871 has 6 divisors (see below), whose sum is σ = 3839160. Its totient is φ = 1771908.

The previous prime is 2657867. The next prime is 2657887. The reversal of 2657871 is 1787562.

2657871 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2657871 - 2² = 2657867 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2657801) 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 5 ways as a sum of consecutive naturals, for example, 147651 + ... + 147668.

It is an arithmetic number, because the mean of its divisors is an integer number (639860).

2^2657871 is an apocalyptic number.

2657871 is a deficient number, since it is larger than the sum of its proper divisors (1181289).

2657871 is a wasteful number, since it uses less digits than its factorization.

2657871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295325 (or 295322 counting only the distinct ones).

The product of its digits is 23520, while the sum is 36.

The square root of 2657871 is about 1630.2978255521. The cubic root of 2657871 is about 138.5196225678.

The spelling of 2657871 in words is "two million, six hundred fifty-seven thousand, eight hundred seventy-one".