166497 has 16 divisors (see below), whose sum is σ = 245760. Its totient is φ = 99792.

The previous prime is 166487. The next prime is 166541. The reversal of 166497 is 794661.

It is a happy number.

It is not a de Polignac number, because 166497 - 2¹¹ = 164449 is a prime.

166497 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 166497.

It is not an unprimeable number, because it can be changed into a prime (166417) 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, 1248 + ... + 1374.

It is an arithmetic number, because the mean of its divisors is an integer number (15360).

2¹⁶⁶⁴⁹⁷ is an apocalyptic number.

It is an amenable number.

166497 is a deficient number, since it is larger than the sum of its proper divisors (79263).

166497 is a wasteful number, since it uses less digits than its factorization.

166497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172.

The product of its digits is 9072, while the sum is 33.

The square root of 166497 is about 408.0404391724. The cubic root of 166497 is about 55.0134402415.

Subtracting from 166497 its sum of digits (33), we obtain a square (166464 = 408²).

The spelling of 166497 in words is "one hundred sixty-six thousand, four hundred ninety-seven".