2685139 has 8 divisors (see below), whose sum is σ = 2831760. Its totient is φ = 2542176.

The previous prime is 2685121. The next prime is 2685169. The reversal of 2685139 is 9315862.

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

It is a cyclic number.

It is not a de Polignac number, because 2685139 - 2¹⁵ = 2652371 is a prime.

It is a Duffinian 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, 664 + ... + 2410.

It is an arithmetic number, because the mean of its divisors is an integer number (353970).

2^2685139 is an apocalyptic number.

2685139 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

2685139 is a deficient number, since it is larger than the sum of its proper divisors (146621).

2685139 is a wasteful number, since it uses less digits than its factorization.

2685139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1829.

The product of its digits is 12960, while the sum is 34.

The square root of 2685139 is about 1638.6393746032. The cubic root of 2685139 is about 138.9917183617.

The spelling of 2685139 in words is "two million, six hundred eighty-five thousand, one hundred thirty-nine".