20714765 has 8 divisors (see below), whose sum is σ = 24886680. Its totient is φ = 16552512.

The previous prime is 20714761. The next prime is 20714767. The reversal of 20714765 is 56741702.

It can be written as a sum of positive squares in 4 ways, for example, as 157609 + 20557156 = 397^2 + 4534^2 .

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 20714765 - 2² = 20714761 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20714761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3731 + ... + 7439.

It is an arithmetic number, because the mean of its divisors is an integer number (3110835).

Almost surely, 2^20714765 is an apocalyptic number.

It is an amenable number.

20714765 is a deficient number, since it is larger than the sum of its proper divisors (4171915).

20714765 is a wasteful number, since it uses less digits than its factorization.

20714765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4831.

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 20714765 is about 4551.3476026338. The cubic root of 20714765 is about 274.6376052910.

The spelling of 20714765 in words is "twenty million, seven hundred fourteen thousand, seven hundred sixty-five".