166029905 has 16 divisors (see below), whose sum is σ = 211351680. Its totient is φ = 124776192.

The previous prime is 166029887. The next prime is 166029907. The reversal of 166029905 is 509920661.

166029905 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 166029905 - 2⁸ = 166029649 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (166029907) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53486 + ... + 56504.

It is an arithmetic number, because the mean of its divisors is an integer number (13209480).

Almost surely, 2^166029905 is an apocalyptic number.

It is an amenable number.

166029905 is a deficient number, since it is larger than the sum of its proper divisors (45321775).

166029905 is a wasteful number, since it uses less digits than its factorization.

166029905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3688.

The product of its (nonzero) digits is 29160, while the sum is 38.

The square root of 166029905 is about 12885.2592135354. The cubic root of 166029905 is about 549.6194668055.

The spelling of 166029905 in words is "one hundred sixty-six million, twenty-nine thousand, nine hundred five".