20166207 has 4 divisors (see below), whose sum is σ = 26888280. Its totient is φ = 13444136.

The previous prime is 20166169. The next prime is 20166217. The reversal of 20166207 is 70266102.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20166207 - 2⁶ = 20166143 is a prime.

It is a super-3 number, since 3×20166207³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20166217) 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, 3361032 + ... + 3361037.

It is an arithmetic number, because the mean of its divisors is an integer number (6722070).

Almost surely, 2^20166207 is an apocalyptic number.

20166207 is a deficient number, since it is larger than the sum of its proper divisors (6722073).

20166207 is an equidigital number, since it uses as much as digits as its factorization.

20166207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6722072.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 20166207 is about 4490.6800153206. The cubic root of 20166207 is about 272.1916136502.

The spelling of 20166207 in words is "twenty million, one hundred sixty-six thousand, two hundred seven".