6690492105 has 16 divisors (see below), whose sum is σ = 11677950144. Its totient is φ = 3243874880.

The previous prime is 6690492007. The next prime is 6690492131. The reversal of 6690492105 is 5012940966.

It is a happy number.

It is not a de Polignac number, because 6690492105 - 2¹¹ = 6690490057 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20274054 + ... + 20274383.

It is an arithmetic number, because the mean of its divisors is an integer number (729871884).

Almost surely, 2^6690492105 is an apocalyptic number.

It is an amenable number.

6690492105 is a deficient number, since it is larger than the sum of its proper divisors (4987458039).

6690492105 is a wasteful number, since it uses less digits than its factorization.

6690492105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40548456.

The product of its (nonzero) digits is 116640, while the sum is 42.

The square root of 6690492105 is about 81795.4283869215. The cubic root of 6690492105 is about 1884.3114517373.

The spelling of 6690492105 in words is "six billion, six hundred ninety million, four hundred ninety-two thousand, one hundred five".