2678685 has 16 divisors (see below), whose sum is σ = 4386624. Its totient is φ = 1395072.

The previous prime is 2678681. The next prime is 2678699. The reversal of 2678685 is 5868762.

It is not a de Polignac number, because 2678685 - 2² = 2678681 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2678681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1432 + ... + 2721.

It is an arithmetic number, because the mean of its divisors is an integer number (274164).

2^2678685 is an apocalyptic number.

It is an amenable number.

2678685 is a deficient number, since it is larger than the sum of its proper divisors (1707939).

2678685 is a wasteful number, since it uses less digits than its factorization.

2678685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4204.

The product of its digits is 161280, while the sum is 42.

The square root of 2678685 is about 1636.6688730467. The cubic root of 2678685 is about 138.8802688576.

The spelling of 2678685 in words is "two million, six hundred seventy-eight thousand, six hundred eighty-five".