20066723 has 2 divisors, whose sum is σ = 20066724. Its totient is φ = 20066722.

The previous prime is 20066719. The next prime is 20066729. The reversal of 20066723 is 32766002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20066723 - 2² = 20066719 is a prime.

It is equal to p_1274606 and since 20066723 and 1274606 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 20066692 and 20066701.

It is not a weakly prime, because it can be changed into another prime (20066729) 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 as a sum of consecutive naturals, namely, 10033361 + 10033362.

It is an arithmetic number, because the mean of its divisors is an integer number (10033362).

Almost surely, 2^20066723 is an apocalyptic number.

20066723 is a deficient number, since it is larger than the sum of its proper divisors (1).

20066723 is an equidigital number, since it uses as much as digits as its factorization.

20066723 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 20066723 is about 4479.5896017381. The cubic root of 20066723 is about 271.7432834115.

The spelling of 20066723 in words is "twenty million, sixty-six thousand, seven hundred twenty-three".