966665 has 16 divisors (see below), whose sum is σ = 1347840. Its totient is φ = 651840.

The previous prime is 966661. The next prime is 966677. The reversal of 966665 is 566669.

It is not a de Polignac number, because 966665 - 2² = 966661 is a prime.

It is a Curzon number.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (966661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2291 + ... + 2679.

It is an arithmetic number, because the mean of its divisors is an integer number (84240).

2⁹⁶⁶⁶⁶⁵ is an apocalyptic number.

It is an amenable number.

966665 is a deficient number, since it is larger than the sum of its proper divisors (381175).

966665 is a wasteful number, since it uses less digits than its factorization.

966665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472.

The product of its digits is 58320, while the sum is 38.

The square root of 966665 is about 983.1912326704. The cubic root of 966665 is about 98.8762525527.

The spelling of 966665 in words is "nine hundred sixty-six thousand, six hundred sixty-five".