2687216 has 20 divisors (see below), whose sum is σ = 5950512. Its totient is φ = 1151616.

The previous prime is 2687213. The next prime is 2687219. The reversal of 2687216 is 6127862.

It is an interprime number because it is at equal distance from previous prime (2687213) and next prime (2687219).

It is a super-2 number, since 2×2687216² = 14442259661312, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2687213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11885 + ... + 12108.

2^2687216 is an apocalyptic number.

It is an amenable number.

2687216 is an abundant number, since it is smaller than the sum of its proper divisors (3263296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2687216 is a wasteful number, since it uses less digits than its factorization.

2687216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24008 (or 24002 counting only the distinct ones).

The product of its digits is 8064, while the sum is 32.

The square root of 2687216 is about 1639.2730095991. The cubic root of 2687216 is about 139.0275465996.

The spelling of 2687216 in words is "two million, six hundred eighty-seven thousand, two hundred sixteen".