6890018685 has 16 divisors (see below), whose sum is σ = 12026214720. Its totient is φ = 3340615040.

The previous prime is 6890018671. The next prime is 6890018693. The reversal of 6890018685 is 5868100986.

6890018685 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6890018685 - 2⁴ = 6890018669 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20878680 + ... + 20879009.

It is an arithmetic number, because the mean of its divisors is an integer number (751638420).

Almost surely, 2^6890018685 is an apocalyptic number.

It is an amenable number.

6890018685 is a deficient number, since it is larger than the sum of its proper divisors (5136196035).

6890018685 is a wasteful number, since it uses less digits than its factorization.

6890018685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41757708.

The product of its (nonzero) digits is 829440, while the sum is 51.

The square root of 6890018685 is about 83006.1364297845. The cubic root of 6890018685 is about 1902.8598377820.

The spelling of 6890018685 in words is "six billion, eight hundred ninety million, eighteen thousand, six hundred eighty-five".