10006666 has 8 divisors (see below), whose sum is σ = 15097284. Its totient is φ = 4974240.

The previous prime is 10006663. The next prime is 10006699. The reversal of 10006666 is 66660001.

It can be written as a sum of positive squares in 2 ways, for example, as 8732025 + 1274641 = 2955^2 + 1129^2 .

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

10006666 is a modest number, since divided by 6666 gives 1000 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 10006666.

It is not an unprimeable number, because it can be changed into a prime (10006663) 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, 14115 + ... + 14806.

Almost surely, 2^10006666 is an apocalyptic number.

10006666 is a deficient number, since it is larger than the sum of its proper divisors (5090618).

10006666 is a wasteful number, since it uses less digits than its factorization.

10006666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29096.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 10006666 is about 3163.3314717241. The cubic root of 10006666 is about 215.4913299089.

Adding to 10006666 its reverse (66660001), we get a palindrome (76666667).

The spelling of 10006666 in words is "ten million, six thousand, six hundred sixty-six".