166522063 has 4 divisors (see below), whose sum is σ = 166794328. Its totient is φ = 166249800.

The previous prime is 166522003. The next prime is 166522073. The reversal of 166522063 is 360225661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 360225661 = 647 ⋅556763.

It is a cyclic number.

It is not a de Polignac number, because 166522063 - 2²⁵ = 132967631 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 (166522003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135213 + ... + 136438.

It is an arithmetic number, because the mean of its divisors is an integer number (41698582).

Almost surely, 2^166522063 is an apocalyptic number.

166522063 is a deficient number, since it is larger than the sum of its proper divisors (272265).

166522063 is an equidigital number, since it uses as much as digits as its factorization.

166522063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272264.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 166522063 is about 12904.3427961288. The cubic root of 166522063 is about 550.1620051685.

The spelling of 166522063 in words is "one hundred sixty-six million, five hundred twenty-two thousand, sixty-three".