9166666 has 4 divisors (see below), whose sum is σ = 13750002. Its totient is φ = 4583332.

The previous prime is 9166649. The next prime is 9166667. The reversal of 9166666 is 6666619.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6666619 = 23 ⋅289853.

It can be written as a sum of positive squares in only one way, i.e., 8208225 + 958441 = 2865^2 + 979^2 .

9166666 is a modest number, since divided by 6666 gives 916 as remainder.

It is not an unprimeable number, because it can be changed into a prime (9166667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2291665 + ... + 2291668.

Almost surely, 2^9166666 is an apocalyptic number.

9166666 is a deficient number, since it is larger than the sum of its proper divisors (4583336).

9166666 is a wasteful number, since it uses less digits than its factorization.

9166666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4583335.

The product of its digits is 69984, while the sum is 40.

The square root of 9166666 is about 3027.6502440011. The cubic root of 9166666 is about 209.2845342004.

It can be divided in two parts, 91 and 66666, that multiplied together give a palindrome (6066606).

The spelling of 9166666 in words is "nine million, one hundred sixty-six thousand, six hundred sixty-six".