6661058066 has 8 divisors (see below), whose sum is σ = 10760170764. Its totient is φ = 3074334480.

The previous prime is 6661058011. The next prime is 6661058069. The reversal of 6661058066 is 6608501666.

It can be written as a sum of positive squares in 2 ways, for example, as 6556302841 + 104755225 = 80971^2 + 10235^2 .

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

It is not an unprimeable number, because it can be changed into a prime (6661058069) 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, 128097245 + ... + 128097296.

Almost surely, 2^6661058066 is an apocalyptic number.

6661058066 is a deficient number, since it is larger than the sum of its proper divisors (4099112698).

6661058066 is a wasteful number, since it uses less digits than its factorization.

6661058066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256194556.

The product of its (nonzero) digits is 311040, while the sum is 44.

The square root of 6661058066 is about 81615.3053415841. The cubic root of 6661058066 is about 1881.5441201549.

The spelling of 6661058066 in words is "six billion, six hundred sixty-one million, fifty-eight thousand, sixty-six".