166605713 has 8 divisors (see below), whose sum is σ = 168073920. Its totient is φ = 165143440.

The previous prime is 166605697. The next prime is 166605727. The reversal of 166605713 is 317506661.

It is a happy number.

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 166605713 - 2⁴ = 166605697 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (166605773) 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, 68783 + ... + 71163.

It is an arithmetic number, because the mean of its divisors is an integer number (21009240).

Almost surely, 2^166605713 is an apocalyptic number.

It is an amenable number.

166605713 is a deficient number, since it is larger than the sum of its proper divisors (1468207).

166605713 is a wasteful number, since it uses less digits than its factorization.

166605713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2967.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 166605713 is about 12907.5835461174. The cubic root of 166605713 is about 550.2541117779.

The spelling of 166605713 in words is "one hundred sixty-six million, six hundred five thousand, seven hundred thirteen".