166672245 has 16 divisors (see below), whose sum is σ = 267265152. Its totient is φ = 88695360.

The previous prime is 166672243. The next prime is 166672277. The reversal of 166672245 is 542276661.

It is not a de Polignac number, because 166672245 - 2¹ = 166672243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166672241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5137 + ... + 18966.

It is an arithmetic number, because the mean of its divisors is an integer number (16704072).

Almost surely, 2^166672245 is an apocalyptic number.

166672245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

166672245 is a deficient number, since it is larger than the sum of its proper divisors (100592907).

166672245 is a wasteful number, since it uses less digits than its factorization.

166672245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24572.

The product of its digits is 120960, while the sum is 39.

The square root of 166672245 is about 12910.1605334713. The cubic root of 166672245 is about 550.3273478309.

The spelling of 166672245 in words is "one hundred sixty-six million, six hundred seventy-two thousand, two hundred forty-five".