6688622797 has 8 divisors (see below), whose sum is σ = 6789919136. Its totient is φ = 6587369712.

The previous prime is 6688622791. The next prime is 6688622803. The reversal of 6688622797 is 7972268866.

6688622797 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (6688622791) and next prime (6688622803).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6688622797 - 2³ = 6688622789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6688622791) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 443698 + ... + 458524.

It is an arithmetic number, because the mean of its divisors is an integer number (848739892).

Almost surely, 2^6688622797 is an apocalyptic number.

6688622797 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

It is an amenable number.

6688622797 is a deficient number, since it is larger than the sum of its proper divisors (101296339).

6688622797 is a wasteful number, since it uses less digits than its factorization.

6688622797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21627.

The product of its digits is 24385536, while the sum is 61.

The square root of 6688622797 is about 81784.0008620268. Note that the first 3 decimals coincide. The cubic root of 6688622797 is about 1884.1359446390.

The spelling of 6688622797 in words is "six billion, six hundred eighty-eight million, six hundred twenty-two thousand, seven hundred ninety-seven".