6688078862 has 4 divisors (see below), whose sum is σ = 10032118296. Its totient is φ = 3344039430.

The previous prime is 6688078843. The next prime is 6688078867. The reversal of 6688078862 is 2688708866.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6688078867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1672019714 + ... + 1672019717.

It is an arithmetic number, because the mean of its divisors is an integer number (2508029574).

Almost surely, 2^6688078862 is an apocalyptic number.

6688078862 is a deficient number, since it is larger than the sum of its proper divisors (3344039434).

6688078862 is a wasteful number, since it uses less digits than its factorization.

6688078862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3344039433.

The product of its (nonzero) digits is 12386304, while the sum is 59.

The square root of 6688078862 is about 81780.6753579353. The cubic root of 6688078862 is about 1884.0848690888.

The spelling of 6688078862 in words is "six billion, six hundred eighty-eight million, seventy-eight thousand, eight hundred sixty-two".