6870785 has 4 divisors (see below), whose sum is σ = 8244948. Its totient is φ = 5496624.

The previous prime is 6870781. The next prime is 6870797. The reversal of 6870785 is 5870786.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5234944 + 1635841 = 2288^2 + 1279^2 .

It is a cyclic number.

It is not a de Polignac number, because 6870785 - 2² = 6870781 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6870781) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 687074 + ... + 687083.

It is an arithmetic number, because the mean of its divisors is an integer number (2061237).

Almost surely, 2^6870785 is an apocalyptic number.

It is an amenable number.

6870785 is a deficient number, since it is larger than the sum of its proper divisors (1374163).

6870785 is a wasteful number, since it uses less digits than its factorization.

6870785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1374162.

The product of its (nonzero) digits is 94080, while the sum is 41.

The square root of 6870785 is about 2621.2182282290. The cubic root of 6870785 is about 190.1087558343.

Subtracting from 6870785 its reverse (5870786), we obtain a palindrome (999999).

The spelling of 6870785 in words is "six million, eight hundred seventy thousand, seven hundred eighty-five".