6894985 has 4 divisors (see below), whose sum is σ = 8273988. Its totient is φ = 5515984.

The previous prime is 6894983. The next prime is 6894991. The reversal of 6894985 is 5894986.

It is a happy number.

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 1926544 + 4968441 = 1388^2 + 2229^2 .

It is a cyclic number.

It is not a de Polignac number, because 6894985 - 2¹ = 6894983 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

6894985 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6894983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 689494 + ... + 689503.

It is an arithmetic number, because the mean of its divisors is an integer number (2068497).

Almost surely, 2^6894985 is an apocalyptic number.

It is an amenable number.

6894985 is a deficient number, since it is larger than the sum of its proper divisors (1379003).

6894985 is a wasteful number, since it uses less digits than its factorization.

6894985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1379002.

The product of its digits is 622080, while the sum is 49.

The square root of 6894985 is about 2625.8303448624. The cubic root of 6894985 is about 190.3316920805.

Subtracting from 6894985 its reverse (5894986), we obtain a palindrome (999999).

The spelling of 6894985 in words is "six million, eight hundred ninety-four thousand, nine hundred eighty-five".