2905871 has 4 divisors (see below), whose sum is σ = 2934744. Its totient is φ = 2877000.

The previous prime is 2905867. The next prime is 2905891. The reversal of 2905871 is 1785092.

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 2905871 - 2² = 2905867 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 (2905891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14285 + ... + 14486.

It is an arithmetic number, because the mean of its divisors is an integer number (733686).

2^2905871 is an apocalyptic number.

2905871 is a deficient number, since it is larger than the sum of its proper divisors (28873).

2905871 is a wasteful number, since it uses less digits than its factorization.

2905871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28872.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 2905871 is about 1704.6615499858. The cubic root of 2905871 is about 142.7004831718.

The spelling of 2905871 in words is "two million, nine hundred five thousand, eight hundred seventy-one".