2686842 has 12 divisors (see below), whose sum is σ = 5821530. Its totient is φ = 895608.

The previous prime is 2686841. The next prime is 2686861. The reversal of 2686842 is 2486862.

It can be written as a sum of positive squares in only one way, i.e., 2223081 + 463761 = 1491^2 + 681^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 2686797 and 2686806.

It is not an unprimeable number, because it can be changed into a prime (2686841) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 74617 + ... + 74652.

2^2686842 is an apocalyptic number.

2686842 is an abundant number, since it is smaller than the sum of its proper divisors (3134688).

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

2686842 is a wasteful number, since it uses less digits than its factorization.

2686842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149277 (or 149274 counting only the distinct ones).

The product of its digits is 36864, while the sum is 36.

The square root of 2686842 is about 1639.1589306715. The cubic root of 2686842 is about 139.0210964650.

It can be divided in two parts, 26 and 86842, that added together give a palindrome (86868).

The spelling of 2686842 in words is "two million, six hundred eighty-six thousand, eight hundred forty-two".