2686916 has 6 divisors (see below), whose sum is σ = 4702110. Its totient is φ = 1343456.

The previous prime is 2686913. The next prime is 2686921. The reversal of 2686916 is 6196862.

It can be written as a sum of positive squares in only one way, i.e., 2238016 + 448900 = 1496^2 + 670^2 .

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 2686916.

It is not an unprimeable number, because it can be changed into a prime (2686913) 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 as a sum of consecutive naturals, namely, 335861 + ... + 335868.

It is an arithmetic number, because the mean of its divisors is an integer number (783685).

2^2686916 is an apocalyptic number.

It is an amenable number.

2686916 is a deficient number, since it is larger than the sum of its proper divisors (2015194).

2686916 is a wasteful number, since it uses less digits than its factorization.

2686916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671733 (or 671731 counting only the distinct ones).

The product of its digits is 31104, while the sum is 38.

The square root of 2686916 is about 1639.1815030679. The cubic root of 2686916 is about 139.0223727423.

The spelling of 2686916 in words is "two million, six hundred eighty-six thousand, nine hundred sixteen".