166106685 has 8 divisors (see below), whose sum is σ = 265770720. Its totient is φ = 88590224.

The previous prime is 166106671. The next prime is 166106719. The reversal of 166106685 is 586601661.

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 166106685 - 2⁴ = 166106669 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5536875 + ... + 5536904.

It is an arithmetic number, because the mean of its divisors is an integer number (33221340).

Almost surely, 2^166106685 is an apocalyptic number.

166106685 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

166106685 is a deficient number, since it is larger than the sum of its proper divisors (99664035).

166106685 is a wasteful number, since it uses less digits than its factorization.

166106685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11073787.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 166106685 is about 12888.2382426769. The cubic root of 166106685 is about 549.7041770053.

The spelling of 166106685 in words is "one hundred sixty-six million, one hundred six thousand, six hundred eighty-five".