6011663666 has 8 divisors (see below), whose sum is σ = 9033345180. Its totient is φ = 3000548608.

The previous prime is 6011663657. The next prime is 6011663683. The reversal of 6011663666 is 6663661106.

It can be written as a sum of positive squares in 2 ways, for example, as 4954048225 + 1057615441 = 70385^2 + 32521^2 .

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

It is a super-2 number, since 2×6011663666² = 72280200066209119112, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2640191 + ... + 2642466.

Almost surely, 2^6011663666 is an apocalyptic number.

6011663666 is a deficient number, since it is larger than the sum of its proper divisors (3021681514).

6011663666 is a wasteful number, since it uses less digits than its factorization.

6011663666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5283228.

The product of its (nonzero) digits is 139968, while the sum is 41.

The square root of 6011663666 is about 77534.9190107270. The cubic root of 6011663666 is about 1818.2972911090.

The spelling of 6011663666 in words is "six billion, eleven million, six hundred sixty-three thousand, six hundred sixty-six".