20706117 has 8 divisors (see below), whose sum is σ = 27918720. Its totient is φ = 13648800.

The previous prime is 20706071. The next prime is 20706121. The reversal of 20706117 is 71160702.

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

It is not a de Polignac number, because 20706117 - 2¹² = 20702021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20706167) 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, 38509 + ... + 39042.

It is an arithmetic number, because the mean of its divisors is an integer number (3489840).

Almost surely, 2^20706117 is an apocalyptic number.

It is an amenable number.

20706117 is a deficient number, since it is larger than the sum of its proper divisors (7212603).

20706117 is an equidigital number, since it uses as much as digits as its factorization.

20706117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77643.

The product of its (nonzero) digits is 588, while the sum is 24.

The square root of 20706117 is about 4550.3974551681. The cubic root of 20706117 is about 274.5993814026.

Adding to 20706117 its reverse (71160702), we get a palindrome (91866819).

The spelling of 20706117 in words is "twenty million, seven hundred six thousand, one hundred seventeen".