2688287 has 12 divisors (see below), whose sum is σ = 3169656. Its totient is φ = 2273040.

The previous prime is 2688239. The next prime is 2688299. The reversal of 2688287 is 7828862.

It is not a de Polignac number, because 2688287 - 2⁶ = 2688223 is a prime.

It is a d-powerful number, because it can be written as 2¹⁹ + 6⁴ + 8 + 8⁵ + 2²¹ + 8⁵ + 7 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2688187) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3737 + ... + 4397.

It is an arithmetic number, because the mean of its divisors is an integer number (264138).

2^2688287 is an apocalyptic number.

2688287 is a deficient number, since it is larger than the sum of its proper divisors (481369).

2688287 is an equidigital number, since it uses as much as digits as its factorization.

2688287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 758 (or 751 counting only the distinct ones).

The product of its digits is 86016, while the sum is 41.

The square root of 2688287 is about 1639.5996462551. The cubic root of 2688287 is about 139.0460141295.

The spelling of 2688287 in words is "two million, six hundred eighty-eight thousand, two hundred eighty-seven".