6652616666 has 16 divisors (see below), whose sum is σ = 10051965000. Its totient is φ = 3301988928.

The previous prime is 6652616651. The next prime is 6652616689. The reversal of 6652616666 is 6666162566.

It can be written as a sum of positive squares in 4 ways, for example, as 6339503641 + 313113025 = 79621^2 + 17695^2 .

It is an unprimeable number.

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, 570260 + ... + 581808.

Almost surely, 2^6652616666 is an apocalyptic number.

6652616666 is a deficient number, since it is larger than the sum of its proper divisors (3399348334).

6652616666 is a wasteful number, since it uses less digits than its factorization.

6652616666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13633.

The product of its digits is 2799360, while the sum is 50.

The square root of 6652616666 is about 81563.5743821959. The cubic root of 6652616666 is about 1880.7489721753.

The spelling of 6652616666 in words is "six billion, six hundred fifty-two million, six hundred sixteen thousand, six hundred sixty-six".