20066187 has 8 divisors (see below), whose sum is σ = 26959680. Its totient is φ = 13275080.

The previous prime is 20066183. The next prime is 20066191. The reversal of 20066187 is 78166002.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20066183) and next prime (20066191).

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 20066187 - 2² = 20066183 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20066183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25137 + ... + 25922.

It is an arithmetic number, because the mean of its divisors is an integer number (3369960).

Almost surely, 2^20066187 is an apocalyptic number.

20066187 is a deficient number, since it is larger than the sum of its proper divisors (6893493).

20066187 is a wasteful number, since it uses less digits than its factorization.

20066187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51193.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 20066187 is about 4479.5297744295. The cubic root of 20066187 is about 271.7408638884.

The spelling of 20066187 in words is "twenty million, sixty-six thousand, one hundred eighty-seven".