20652713 has 4 divisors (see below), whose sum is σ = 20662740. Its totient is φ = 20642688.

The previous prime is 20652701. The next prime is 20652719. The reversal of 20652713 is 31725602.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 7198489 + 13454224 = 2683^2 + 3668^2 .

It is a cyclic number.

It is not a de Polignac number, because 20652713 - 2¹⁸ = 20390569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20652719) 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, 668 + ... + 6461.

It is an arithmetic number, because the mean of its divisors is an integer number (5165685).

Almost surely, 2^20652713 is an apocalyptic number.

It is an amenable number.

20652713 is a deficient number, since it is larger than the sum of its proper divisors (10027).

20652713 is an equidigital number, since it uses as much as digits as its factorization.

20652713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10026.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 20652713 is about 4544.5256078055. The cubic root of 20652713 is about 274.3631012909.

The spelling of 20652713 in words is "twenty million, six hundred fifty-two thousand, seven hundred thirteen".