166868207 has 4 divisors (see below), whose sum is σ = 182038056. Its totient is φ = 151698360.

The previous prime is 166868201. The next prime is 166868213. The reversal of 166868207 is 702868661.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (166868201) and next prime (166868213).

It is not a de Polignac number, because 166868207 - 2⁸ = 166867951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166868201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7584908 + ... + 7584929.

It is an arithmetic number, because the mean of its divisors is an integer number (45509514).

Almost surely, 2^166868207 is an apocalyptic number.

166868207 is a deficient number, since it is larger than the sum of its proper divisors (15169849).

166868207 is a wasteful number, since it uses less digits than its factorization.

166868207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15169848.

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 166868207 is about 12917.7477526077. The cubic root of 166868207 is about 550.5429426357.

The spelling of 166868207 in words is "one hundred sixty-six million, eight hundred sixty-eight thousand, two hundred seven".