2685869 has 8 divisors (see below), whose sum is σ = 2781240. Its totient is φ = 2592000.

The previous prime is 2685827. The next prime is 2685877. The reversal of 2685869 is 9685862.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 405769 + 2280100 = 637^2 + 1510^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2685869 is a prime.

It is a super-2 number, since 2×2685869² = 14427784570322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2685169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4169 + ... + 4769.

It is an arithmetic number, because the mean of its divisors is an integer number (347655).

2^2685869 is an apocalyptic number.

It is an amenable number.

2685869 is a deficient number, since it is larger than the sum of its proper divisors (95371).

2685869 is a wasteful number, since it uses less digits than its factorization.

2685869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751.

The product of its digits is 207360, while the sum is 44.

The square root of 2685869 is about 1638.8621052425. The cubic root of 2685869 is about 139.0043129625.

The spelling of 2685869 in words is "two million, six hundred eighty-five thousand, eight hundred sixty-nine".