20066111 has 8 divisors (see below), whose sum is σ = 21695520. Its totient is φ = 18448992.

The previous prime is 20066107. The next prime is 20066113. The reversal of 20066111 is 11166002.

It is a happy number.

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 20066111 - 2² = 20066107 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 20066111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20066113) 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, 485 + ... + 6353.

It is an arithmetic number, because the mean of its divisors is an integer number (2711940).

Almost surely, 2^20066111 is an apocalyptic number.

20066111 is a deficient number, since it is larger than the sum of its proper divisors (1629409).

20066111 is a wasteful number, since it uses less digits than its factorization.

20066111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6145.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 20066111 is about 4479.5212913882. The cubic root of 20066111 is about 271.7405208182.

The spelling of 20066111 in words is "twenty million, sixty-six thousand, one hundred eleven".