2661336066 has 8 divisors (see below), whose sum is σ = 5322672144. Its totient is φ = 887112020.

The previous prime is 2661336059. The next prime is 2661336071. The reversal of 2661336066 is 6606331662.

It is a happy number.

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

2661336066 is an admirable number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221778000 + ... + 221778011.

It is an arithmetic number, because the mean of its divisors is an integer number (665334018).

Almost surely, 2^2661336066 is an apocalyptic number.

2661336066 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.

2661336066 is a wasteful number, since it uses less digits than its factorization.

2661336066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443556016.

The product of its (nonzero) digits is 139968, while the sum is 39.

The square root of 2661336066 is about 51588.1388111647. The cubic root of 2661336066 is about 1385.7979243091.

The spelling of 2661336066 in words is "two billion, six hundred sixty-one million, three hundred thirty-six thousand, sixty-six".