166812007 has 8 divisors (see below), whose sum is σ = 180732816. Its totient is φ = 153347712.

The previous prime is 166811999. The next prime is 166812043. The reversal of 166812007 is 700218661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 166812007 - 2³ = 166811999 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 166812007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166812097) 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, 113368 + ... + 114829.

It is an arithmetic number, because the mean of its divisors is an integer number (22591602).

Almost surely, 2^166812007 is an apocalyptic number.

166812007 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

166812007 is a deficient number, since it is larger than the sum of its proper divisors (13920809).

166812007 is a wasteful number, since it uses less digits than its factorization.

166812007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228257.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 166812007 is about 12915.5722676156. The cubic root of 166812007 is about 550.4811294078.

The spelling of 166812007 in words is "one hundred sixty-six million, eight hundred twelve thousand, seven".