6668908699 has 8 divisors (see below), whose sum is σ = 7131112128. Its totient is φ = 6214473600.

The previous prime is 6668908691. The next prime is 6668908721. The reversal of 6668908699 is 9968098666.

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 6668908699 - 2³ = 6668908691 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6668908691) 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, 1940307 + ... + 1943740.

It is an arithmetic number, because the mean of its divisors is an integer number (891389016).

Almost surely, 2^6668908699 is an apocalyptic number.

6668908699 is a deficient number, since it is larger than the sum of its proper divisors (462203429).

6668908699 is a wasteful number, since it uses less digits than its factorization.

6668908699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3884165.

The product of its (nonzero) digits is 60466176, while the sum is 67.

The square root of 6668908699 is about 81663.3865266436. The cubic root of 6668908699 is about 1882.2830174353.

The spelling of 6668908699 in words is "six billion, six hundred sixty-eight million, nine hundred eight thousand, six hundred ninety-nine".