10217666 has 8 divisors (see below), whose sum is σ = 15358140. Its totient is φ = 5098288.

The previous prime is 10217653. The next prime is 10217671. The reversal of 10217666 is 66671201.

10217666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 10144225 + 73441 = 3185^2 + 271^2 .

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

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, 4001 + ... + 6036.

Almost surely, 2^10217666 is an apocalyptic number.

10217666 is a deficient number, since it is larger than the sum of its proper divisors (5140474).

10217666 is a wasteful number, since it uses less digits than its factorization.

10217666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10548.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 10217666 is about 3196.5084076223. The cubic root of 10217666 is about 216.9954199236.

Adding to 10217666 its reverse (66671201), we get a palindrome (76888867).

The spelling of 10217666 in words is "ten million, two hundred seventeen thousand, six hundred sixty-six".