6690829091 has 8 divisors (see below), whose sum is σ = 6755555520. Its totient is φ = 6626143528.

The previous prime is 6690829087. The next prime is 6690829109. The reversal of 6690829091 is 1909280966.

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 6690829091 - 2² = 6690829087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6690829001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 396080 + ... + 412626.

It is an arithmetic number, because the mean of its divisors is an integer number (844444440).

Almost surely, 2^6690829091 is an apocalyptic number.

6690829091 is a deficient number, since it is larger than the sum of its proper divisors (64726429).

6690829091 is a wasteful number, since it uses less digits than its factorization.

6690829091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20433.

The product of its (nonzero) digits is 419904, while the sum is 50.

The square root of 6690829091 is about 81797.4882927343. The cubic root of 6690829091 is about 1884.3430874730.

The spelling of 6690829091 in words is "six billion, six hundred ninety million, eight hundred twenty-nine thousand, ninety-one".