20681714 has 8 divisors (see below), whose sum is σ = 31121388. Its totient is φ = 10307920.

The previous prime is 20681711. The next prime is 20681719. The reversal of 20681714 is 41718602.

It can be written as a sum of positive squares in 2 ways, for example, as 19651489 + 1030225 = 4433^2 + 1015^2 .

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

It is not an unprimeable number, because it can be changed into a prime (20681711) 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, 15677 + ... + 16944.

Almost surely, 2^20681714 is an apocalyptic number.

20681714 is a deficient number, since it is larger than the sum of its proper divisors (10439674).

20681714 is a wasteful number, since it uses less digits than its factorization.

20681714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32940.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 20681714 is about 4547.7152505406. The cubic root of 20681714 is about 274.4914634877.

The spelling of 20681714 in words is "twenty million, six hundred eighty-one thousand, seven hundred fourteen".