166611672 has 24 divisors (see below), whose sum is σ = 451240140. Its totient is φ = 55537200.

The previous prime is 166611559. The next prime is 166611677. The reversal of 166611672 is 276116661.

166611672 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166611677) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1156954 + ... + 1157097.

Almost surely, 2^166611672 is an apocalyptic number.

166611672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

166611672 is an abundant number, since it is smaller than the sum of its proper divisors (284628468).

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

166611672 is a wasteful number, since it uses less digits than its factorization.

166611672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2314063 (or 2314056 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 166611672 is about 12907.8143773452. The cubic root of 166611672 is about 550.2606720275.

The spelling of 166611672 in words is "one hundred sixty-six million, six hundred eleven thousand, six hundred seventy-two".