20061623 has 2 divisors, whose sum is σ = 20061624. Its totient is φ = 20061622.

The previous prime is 20061611. The next prime is 20061653. The reversal of 20061623 is 32616002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20061623 - 2⁸ = 20061367 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20061595 and 20061604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20061653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10030811 + 10030812.

It is an arithmetic number, because the mean of its divisors is an integer number (10030812).

Almost surely, 2^20061623 is an apocalyptic number.

20061623 is a deficient number, since it is larger than the sum of its proper divisors (1).

20061623 is an equidigital number, since it uses as much as digits as its factorization.

20061623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 20061623 is about 4479.0203169890. The cubic root of 20061623 is about 271.7202600845.

Adding to 20061623 its reverse (32616002), we get a palindrome (52677625).

The spelling of 20061623 in words is "twenty million, sixty-one thousand, six hundred twenty-three".