166648573 has 16 divisors (see below), whose sum is σ = 208002816. Its totient is φ = 129991680.

The previous prime is 166648553. The next prime is 166648613. The reversal of 166648573 is 375846661.

It is not a de Polignac number, because 166648573 - 2⁹ = 166648061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166648543) 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, 6436 + ... + 19357.

It is an arithmetic number, because the mean of its divisors is an integer number (13000176).

Almost surely, 2^166648573 is an apocalyptic number.

166648573 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

166648573 is a deficient number, since it is larger than the sum of its proper divisors (41354243).

166648573 is a wasteful number, since it uses less digits than its factorization.

166648573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25884.

The product of its digits is 725760, while the sum is 46.

The square root of 166648573 is about 12909.2437036412. The cubic root of 166648573 is about 550.3012927714.

The spelling of 166648573 in words is "one hundred sixty-six million, six hundred forty-eight thousand, five hundred seventy-three".