6870985 has 24 divisors (see below), whose sum is σ = 9317448. Its totient is φ = 4857600.

The previous prime is 6870943. The next prime is 6871001. The reversal of 6870985 is 5890786.

6870985 = 248² + 249² + ... + 329².

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 131769 + 6739216 = 363^2 + 2596^2 .

It is not a de Polignac number, because 6870985 - 2⁹ = 6870473 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24667 + ... + 24943.

It is an arithmetic number, because the mean of its divisors is an integer number (388227).

Almost surely, 2^6870985 is an apocalyptic number.

It is an amenable number.

6870985 is a deficient number, since it is larger than the sum of its proper divisors (2446463).

6870985 is a wasteful number, since it uses less digits than its factorization.

6870985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345 (or 334 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 43.

The square root of 6870985 is about 2621.2563781515. The cubic root of 6870985 is about 190.1106004261.

The spelling of 6870985 in words is "six million, eight hundred seventy thousand, nine hundred eighty-five".