20862713 has 2 divisors, whose sum is σ = 20862714. Its totient is φ = 20862712.

The previous prime is 20862707. The next prime is 20862731. The reversal of 20862713 is 31726802.

It is a happy number.

Together with next prime (20862731) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13935289 + 6927424 = 3733^2 + 2632^2 .

It is a cyclic number.

It is not a de Polignac number, because 20862713 - 2¹⁶ = 20797177 is a prime.

It is not a weakly prime, because it can be changed into another prime (20862733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10431356 + 10431357.

It is an arithmetic number, because the mean of its divisors is an integer number (10431357).

Almost surely, 2^20862713 is an apocalyptic number.

It is an amenable number.

20862713 is a deficient number, since it is larger than the sum of its proper divisors (1).

20862713 is an equidigital number, since it uses as much as digits as its factorization.

20862713 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 20862713 is about 4567.5718932492. The cubic root of 20862713 is about 275.2898893491.

The spelling of 20862713 in words is "twenty million, eight hundred sixty-two thousand, seven hundred thirteen".