166108657 has 8 divisors (see below), whose sum is σ = 195148800. Its totient is φ = 139391760.

The previous prime is 166108603. The next prime is 166108661. The reversal of 166108657 is 756801661.

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 166108657 - 2⁷ = 166108529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166108667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 580657 + ... + 580942.

It is an arithmetic number, because the mean of its divisors is an integer number (24393600).

Almost surely, 2^166108657 is an apocalyptic number.

It is an amenable number.

166108657 is a deficient number, since it is larger than the sum of its proper divisors (29040143).

166108657 is a wasteful number, since it uses less digits than its factorization.

166108657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1161623.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 166108657 is about 12888.3147463119. The cubic root of 166108657 is about 549.7063523389.

The spelling of 166108657 in words is "one hundred sixty-six million, one hundred eight thousand, six hundred fifty-seven".