166430645 has 8 divisors (see below), whose sum is σ = 208400256. Its totient is φ = 127355536.

The previous prime is 166430609. The next prime is 166430647. The reversal of 166430645 is 546034661.

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 166430645 - 2¹⁰ = 166429621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166430647) 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, 723497 + ... + 723726.

It is an arithmetic number, because the mean of its divisors is an integer number (26050032).

Almost surely, 2^166430645 is an apocalyptic number.

It is an amenable number.

166430645 is a deficient number, since it is larger than the sum of its proper divisors (41969611).

166430645 is a wasteful number, since it uses less digits than its factorization.

166430645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1447251.

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 166430645 is about 12900.8001689818. The cubic root of 166430645 is about 550.0613099698.

The spelling of 166430645 in words is "one hundred sixty-six million, four hundred thirty thousand, six hundred forty-five".