666600011 has 24 divisors (see below), whose sum is σ = 848931552. Its totient is φ = 512265600.

The previous prime is 666599977. The next prime is 666600059. The reversal of 666600011 is 110006666.

It is not a de Polignac number, because 666600011 - 2¹⁴ = 666583627 is a prime.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (666600071) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56441 + ... + 67221.

It is an arithmetic number, because the mean of its divisors is an integer number (35372148).

Almost surely, 2^666600011 is an apocalyptic number.

666600011 is a deficient number, since it is larger than the sum of its proper divisors (182331541).

666600011 is a wasteful number, since it uses less digits than its factorization.

666600011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10883 (or 10872 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 666600011 is about 25818.5981610156. The cubic root of 666600011 is about 873.5513492218.

Adding to 666600011 its reverse (110006666), we get a palindrome (776606677).

The spelling of 666600011 in words is "six hundred sixty-six million, six hundred thousand, eleven".