166650063 has 4 divisors (see below), whose sum is σ = 222200088. Its totient is φ = 111100040.

The previous prime is 166650061. The next prime is 166650089. The reversal of 166650063 is 360056661.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 166650063 - 2¹ = 166650061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166650061) 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 3 ways as a sum of consecutive naturals, for example, 27775008 + ... + 27775013.

It is an arithmetic number, because the mean of its divisors is an integer number (55550022).

Almost surely, 2^166650063 is an apocalyptic number.

166650063 is a deficient number, since it is larger than the sum of its proper divisors (55550025).

166650063 is an equidigital number, since it uses as much as digits as its factorization.

166650063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55550024.

The product of its (nonzero) digits is 19440, while the sum is 33.

The square root of 166650063 is about 12909.3014140967. The cubic root of 166650063 is about 550.3029328424.

The spelling of 166650063 in words is "one hundred sixty-six million, six hundred fifty thousand, sixty-three".