6863663686 has 16 divisors (see below), whose sum is σ = 11593755648. Its totient is φ = 3019206600.

The previous prime is 6863663641. The next prime is 6863663699.

It is a happy number.

6863663686 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 6863663686.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5031330 + ... + 5032693.

It is an arithmetic number, because the mean of its divisors is an integer number (724609728).

Almost surely, 2^6863663686 is an apocalyptic number.

6863663686 is a deficient number, since it is larger than the sum of its proper divisors (4730091962).

6863663686 is a wasteful number, since it uses less digits than its factorization.

6863663686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10064067.

The product of its digits is 26873856, while the sum is 58.

The square root of 6863663686 is about 82847.2310098533. The cubic root of 6863663686 is about 1900.4305290300.

The spelling of 6863663686 in words is "six billion, eight hundred sixty-three million, six hundred sixty-three thousand, six hundred eighty-six".