20712713 has 8 divisors (see below), whose sum is σ = 24222528. Its totient is φ = 17340624.

The previous prime is 20712709. The next prime is 20712751. The reversal of 20712713 is 31721702.

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

It is not a de Polignac number, because 20712713 - 2² = 20712709 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20712113) 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, 34106 + ... + 34707.

It is an arithmetic number, because the mean of its divisors is an integer number (3027816).

Almost surely, 2^20712713 is an apocalyptic number.

It is an amenable number.

20712713 is a deficient number, since it is larger than the sum of its proper divisors (3509815).

20712713 is an equidigital number, since it uses as much as digits as its factorization.

20712713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68863.

The product of its (nonzero) digits is 588, while the sum is 23.

The square root of 20712713 is about 4551.1221693117. The cubic root of 20712713 is about 274.6285364783.

The spelling of 20712713 in words is "twenty million, seven hundred twelve thousand, seven hundred thirteen".