166364563 has 8 divisors (see below), whose sum is σ = 168665328. Its totient is φ = 164077824.

The previous prime is 166364531. The next prime is 166364623. The reversal of 166364563 is 365463661.

166364563 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 166364563 - 2⁵ = 166364531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166364063) 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, 21595 + ... + 28267.

It is an arithmetic number, because the mean of its divisors is an integer number (21083166).

Almost surely, 2^166364563 is an apocalyptic number.

166364563 is a deficient number, since it is larger than the sum of its proper divisors (2300765).

166364563 is a wasteful number, since it uses less digits than its factorization.

166364563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7013.

The product of its digits is 233280, while the sum is 40.

The square root of 166364563 is about 12898.2387557372. The cubic root of 166364563 is about 549.9884989331.

The spelling of 166364563 in words is "one hundred sixty-six million, three hundred sixty-four thousand, five hundred sixty-three".