2887897 has 4 divisors (see below), whose sum is σ = 2891700. Its totient is φ = 2884096.

The previous prime is 2887883. The next prime is 2887921. The reversal of 2887897 is 7987882.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 2653641 + 234256 = 1629^2 + 484^2 .

It is a cyclic number.

It is not a de Polignac number, because 2887897 - 2¹⁵ = 2855129 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2887897.

It is not an unprimeable number, because it can be changed into a prime (2887817) 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, 328 + ... + 2425.

It is an arithmetic number, because the mean of its divisors is an integer number (722925).

2^2887897 is an apocalyptic number.

It is an amenable number.

2887897 is a deficient number, since it is larger than the sum of its proper divisors (3803).

2887897 is a wasteful number, since it uses less digits than its factorization.

2887897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3802.

The product of its digits is 451584, while the sum is 49.

The square root of 2887897 is about 1699.3813580241. The cubic root of 2887897 is about 142.4056541804.

The spelling of 2887897 in words is "two million, eight hundred eighty-seven thousand, eight hundred ninety-seven".