2686856 has 8 divisors (see below), whose sum is σ = 5037870. Its totient is φ = 1343424.

The previous prime is 2686841. The next prime is 2686861. The reversal of 2686856 is 6586862.

It can be written as a sum of positive squares in only one way, i.e., 2669956 + 16900 = 1634^2 + 130^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 167921 + ... + 167936.

2^2686856 is an apocalyptic number.

It is an amenable number.

2686856 is a deficient number, since it is larger than the sum of its proper divisors (2351014).

2686856 is a wasteful number, since it uses less digits than its factorization.

2686856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335863 (or 335859 counting only the distinct ones).

The product of its digits is 138240, while the sum is 41.

The square root of 2686856 is about 1639.1632011487. The cubic root of 2686856 is about 139.0213379247.

The spelling of 2686856 in words is "two million, six hundred eighty-six thousand, eight hundred fifty-six".