65423 has 2 divisors, whose sum is σ = 65424. Its totient is φ = 65422.

The previous prime is 65419. The next prime is 65437. The reversal of 65423 is 32456.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65423 - 2² = 65419 is a prime.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 65395 and 65404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32711 + 32712.

It is an arithmetic number, because the mean of its divisors is an integer number (32712).

2⁶⁵⁴²³ is an apocalyptic number.

65423 is a deficient number, since it is larger than the sum of its proper divisors (1).

65423 is an equidigital number, since it uses as much as digits as its factorization.

65423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 720, while the sum is 20.

The square root of 65423 is about 255.7792016564. The cubic root of 65423 is about 40.2942878895.

Adding to 65423 its reverse (32456), we get a palindrome (97879).

It can be divided in two parts, 65 and 423, that multiplied together give a triangular number (27495 = T₂₃₄).

The spelling of 65423 in words is "sixty-five thousand, four hundred twenty-three".