6863663685 has 16 divisors (see below), whose sum is σ = 10982891520. Its totient is φ = 3660277440.

The previous prime is 6863663641. The next prime is 6863663699. The reversal of 6863663685 is 5863663686.

It is not a de Polignac number, because 6863663685 - 2¹³ = 6863655493 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, 286396 + ... + 309434.

It is an arithmetic number, because the mean of its divisors is an integer number (686430720).

Almost surely, 2^6863663685 is an apocalyptic number.

It is an amenable number.

6863663685 is a deficient number, since it is larger than the sum of its proper divisors (4119227835).

6863663685 is a wasteful number, since it uses less digits than its factorization.

6863663685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42908.

The product of its digits is 22394880, while the sum is 57.

The square root of 6863663685 is about 82847.2310038181. The cubic root of 6863663685 is about 1900.4305289377.

Subtracting from 6863663685 its reverse (5863663686), we obtain a palindrome (999999999).

The spelling of 6863663685 in words is "six billion, eight hundred sixty-three million, six hundred sixty-three thousand, six hundred eighty-five".