20650423 has 2 divisors, whose sum is σ = 20650424. Its totient is φ = 20650422.

The previous prime is 20650387. The next prime is 20650439. The reversal of 20650423 is 32405602.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20650423 - 2⁹ = 20649911 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20650394 and 20650403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20650463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10325211 + 10325212.

It is an arithmetic number, because the mean of its divisors is an integer number (10325212).

Almost surely, 2^20650423 is an apocalyptic number.

20650423 is a deficient number, since it is larger than the sum of its proper divisors (1).

20650423 is an equidigital number, since it uses as much as digits as its factorization.

20650423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 20650423 is about 4544.2736493306. The cubic root of 20650423 is about 274.3529603355.

The spelling of 20650423 in words is "twenty million, six hundred fifty thousand, four hundred twenty-three".