20747713 has 8 divisors (see below), whose sum is σ = 24352832. Its totient is φ = 17302896.

The previous prime is 20747663. The next prime is 20747719. The reversal of 20747713 is 31774702.

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 20747713 - 2⁹ = 20747201 is a prime.

It is a super-3 number, since 3×20747713³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (20747719) 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, 39795 + ... + 40312.

It is an arithmetic number, because the mean of its divisors is an integer number (3044104).

Almost surely, 2^20747713 is an apocalyptic number.

It is an amenable number.

20747713 is a deficient number, since it is larger than the sum of its proper divisors (3605119).

20747713 is an equidigital number, since it uses as much as digits as its factorization.

20747713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80151.

The product of its (nonzero) digits is 8232, while the sum is 31.

The square root of 20747713 is about 4554.9657517922. The cubic root of 20747713 is about 274.7831370174.

The spelling of 20747713 in words is "twenty million, seven hundred forty-seven thousand, seven hundred thirteen".