166458966 has 16 divisors (see below), whose sum is σ = 333849600. Its totient is φ = 55331048.

The previous prime is 166458961. The next prime is 166458991. The reversal of 166458966 is 669854661.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166458961) 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, 36486 + ... + 40793.

It is an arithmetic number, because the mean of its divisors is an integer number (20865600).

Almost surely, 2^166458966 is an apocalyptic number.

166458966 is an abundant number, since it is smaller than the sum of its proper divisors (167390634).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166458966 is a wasteful number, since it uses less digits than its factorization.

166458966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77643.

The product of its digits is 1866240, while the sum is 51.

The square root of 166458966 is about 12901.8977673829. The cubic root of 166458966 is about 550.0925089572.

The spelling of 166458966 in words is "one hundred sixty-six million, four hundred fifty-eight thousand, nine hundred sixty-six".