20576713 has 2 divisors, whose sum is σ = 20576714. Its totient is φ = 20576712.

The previous prime is 20576701. The next prime is 20576719. The reversal of 20576713 is 31767502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11648569 + 8928144 = 3413^2 + 2988^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20576713 is a prime.

It is a super-2 number, since 2×20576713² = 846802235768738, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20576719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10288356 + 10288357.

It is an arithmetic number, because the mean of its divisors is an integer number (10288357).

Almost surely, 2^20576713 is an apocalyptic number.

It is an amenable number.

20576713 is a deficient number, since it is larger than the sum of its proper divisors (1).

20576713 is an equidigital number, since it uses as much as digits as its factorization.

20576713 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8820, while the sum is 31.

The square root of 20576713 is about 4536.1561921962. The cubic root of 20576713 is about 274.0261443432.

The spelling of 20576713 in words is "twenty million, five hundred seventy-six thousand, seven hundred thirteen".