166663272 has 16 divisors (see below), whose sum is σ = 416658240. Its totient is φ = 55554416.

The previous prime is 166663229. The next prime is 166663279. The reversal of 166663272 is 272366661.

166663272 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 166663272.

It is not an unprimeable number, because it can be changed into a prime (166663279) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3472128 + ... + 3472175.

It is an arithmetic number, because the mean of its divisors is an integer number (26041140).

Almost surely, 2^166663272 is an apocalyptic number.

166663272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

166663272 is an abundant number, since it is smaller than the sum of its proper divisors (249994968).

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

166663272 is a wasteful number, since it uses less digits than its factorization.

166663272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6944312 (or 6944308 counting only the distinct ones).

The product of its digits is 108864, while the sum is 39.

The square root of 166663272 is about 12909.8130118139. The cubic root of 166663272 is about 550.3174718096.

The spelling of 166663272 in words is "one hundred sixty-six million, six hundred sixty-three thousand, two hundred seventy-two".