2684687 has 6 divisors (see below), whose sum is σ = 2753328. Its totient is φ = 2616572.

The previous prime is 2684663. The next prime is 2684701. The reversal of 2684687 is 7864862.

It is not a de Polignac number, because 2684687 - 2⁸ = 2684431 is a prime.

It is a d-powerful number, because it can be written as 2¹⁷ + 6⁴ + 8 + 4⁷ + 6⁸ + 8⁵ + 7⁷ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2684287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11114 + ... + 11352.

It is an arithmetic number, because the mean of its divisors is an integer number (458888).

2^2684687 is an apocalyptic number.

2684687 is a deficient number, since it is larger than the sum of its proper divisors (68641).

2684687 is an frugal number, since it uses more digits than its factorization.

2684687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525 (or 286 counting only the distinct ones).

The product of its digits is 129024, while the sum is 41.

The square root of 2684687 is about 1638.5014494958. The cubic root of 2684687 is about 138.9839189167.

The spelling of 2684687 in words is "two million, six hundred eighty-four thousand, six hundred eighty-seven".