6605769138 has 8 divisors (see below), whose sum is σ = 13211538288. Its totient is φ = 2201923044.

The previous prime is 6605769127. The next prime is 6605769139. The reversal of 6605769138 is 8319675066.

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

6605769138 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (6605769139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 550480756 + ... + 550480767.

It is an arithmetic number, because the mean of its divisors is an integer number (1651442286).

Almost surely, 2^6605769138 is an apocalyptic number.

6605769138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6605769138 is a wasteful number, since it uses less digits than its factorization.

6605769138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1100961528.

The product of its (nonzero) digits is 1632960, while the sum is 51.

The square root of 6605769138 is about 81275.8828804708. The cubic root of 6605769138 is about 1876.3238426106.

The spelling of 6605769138 in words is "six billion, six hundred five million, seven hundred sixty-nine thousand, one hundred thirty-eight".