2870891 has 4 divisors (see below), whose sum is σ = 2877984. Its totient is φ = 2863800.

The previous prime is 2870863. The next prime is 2870893. The reversal of 2870891 is 1980782.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2870891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2870893) 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, 2900 + ... + 3761.

It is an arithmetic number, because the mean of its divisors is an integer number (719496).

2^2870891 is an apocalyptic number.

2870891 is a deficient number, since it is larger than the sum of its proper divisors (7093).

2870891 is an equidigital number, since it uses as much as digits as its factorization.

2870891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7092.

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 2870891 is about 1694.3703845382. The cubic root of 2870891 is about 142.1255749586.

The spelling of 2870891 in words is "two million, eight hundred seventy thousand, eight hundred ninety-one".