2887689 has 16 divisors (see below), whose sum is σ = 4428800. Its totient is φ = 1639440.

The previous prime is 2887669. The next prime is 2887693. The reversal of 2887689 is 9867882.

2887689 = 392² + 393² + ... + 409².

It is a happy number.

It is not a de Polignac number, because 2887689 - 2⁵ = 2887657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2887649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3834 + ... + 4524.

It is an arithmetic number, because the mean of its divisors is an integer number (276800).

2^2887689 is an apocalyptic number.

It is an amenable number.

2887689 is a deficient number, since it is larger than the sum of its proper divisors (1541111).

2887689 is a wasteful number, since it uses less digits than its factorization.

2887689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900.

The product of its digits is 387072, while the sum is 48.

The square root of 2887689 is about 1699.3201581809. The cubic root of 2887689 is about 142.4022351888.

The spelling of 2887689 in words is "two million, eight hundred eighty-seven thousand, six hundred eighty-nine".