166878672 has 40 divisors (see below), whose sum is σ = 453795360. Its totient is φ = 52698240.

The previous prime is 166878671. The next prime is 166878689. The reversal of 166878672 is 276878661.

166878672 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-4 number, since 4×166878672⁴ (a number of 34 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166878671) 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, 90579 + ... + 92402.

It is an arithmetic number, because the mean of its divisors is an integer number (11344884).

Almost surely, 2^166878672 is an apocalyptic number.

166878672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

166878672 is an abundant number, since it is smaller than the sum of its proper divisors (286916688).

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

166878672 is a wasteful number, since it uses less digits than its factorization.

166878672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183011 (or 183005 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 51.

The square root of 166878672 is about 12918.1528091287. The cubic root of 166878672 is about 550.5544513418.

The spelling of 166878672 in words is "one hundred sixty-six million, eight hundred seventy-eight thousand, six hundred seventy-two".