911666 has 8 divisors (see below), whose sum is σ = 1562880. Its totient is φ = 390708.

The previous prime is 911663. The next prime is 911671. The reversal of 911666 is 666119.

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

It is a super-2 number, since 2×911666² = 1662269791112, which contains 22 as substring.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 911666.

It is not an unprimeable number, because it can be changed into a prime (911663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32546 + ... + 32573.

It is an arithmetic number, because the mean of its divisors is an integer number (195360).

2⁹¹¹⁶⁶⁶ is an apocalyptic number.

911666 is a deficient number, since it is larger than the sum of its proper divisors (651214).

911666 is a wasteful number, since it uses less digits than its factorization.

911666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65128.

The product of its digits is 1944, while the sum is 29.

The square root of 911666 is about 954.8120233847. The cubic root of 911666 is about 96.9643118083.

The spelling of 911666 in words is "nine hundred eleven thousand, six hundred sixty-six".