9166661 has 8 divisors (see below), whose sum is σ = 10496640. Its totient is φ = 7841808.

The previous prime is 9166649. The next prime is 9166667. The reversal of 9166661 is 1666619.

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

It is a cyclic number.

It is not a de Polignac number, because 9166661 - 2¹⁴ = 9150277 is a prime.

It is a fibodiv number, since the Fibonacci-like sequence with seeds 9 and 166661 contains 9166661 itself.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 4040 + ... + 5886.

It is an arithmetic number, because the mean of its divisors is an integer number (1312080).

Almost surely, 2^9166661 is an apocalyptic number.

It is an amenable number.

9166661 is a deficient number, since it is larger than the sum of its proper divisors (1329979).

9166661 is a wasteful number, since it uses less digits than its factorization.

9166661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2563.

The product of its digits is 11664, while the sum is 35.

The square root of 9166661 is about 3027.6494182781. The cubic root of 9166661 is about 209.2844961487.

The spelling of 9166661 in words is "nine million, one hundred sixty-six thousand, six hundred sixty-one".