166940753 has 8 divisors (see below), whose sum is σ = 191076672. Its totient is φ = 142876656.

The previous prime is 166940737. The next prime is 166940773. The reversal of 166940753 is 357049661.

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 166940753 - 2⁴ = 166940737 is a prime.

It is a super-3 number, since 3×166940753³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 166940753.

It is not an unprimeable number, because it can be changed into a prime (166940773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12875 + ... + 22352.

It is an arithmetic number, because the mean of its divisors is an integer number (23884584).

Almost surely, 2^166940753 is an apocalyptic number.

It is an amenable number.

166940753 is a deficient number, since it is larger than the sum of its proper divisors (24135919).

166940753 is an equidigital number, since it uses as much as digits as its factorization.

166940753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35911.

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 166940753 is about 12920.5554447168. Note that the first 3 decimals coincide. The cubic root of 166940753 is about 550.6227139764.

The spelling of 166940753 in words is "one hundred sixty-six million, nine hundred forty thousand, seven hundred fifty-three".