435623 has 2 divisors, whose sum is σ = 435624. Its totient is φ = 435622.

The previous prime is 435619. The next prime is 435637. The reversal of 435623 is 326534.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 435623 - 2² = 435619 is a prime.

It is a d-powerful number, because it can be written as 4⁷ + 3⁴ + 6⁷ + 5⁷ + 2¹¹ + 3¹⁰ .

It is equal to p₃₆₆₁₇ and since 435623 and 36617 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (435653) 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, 217811 + 217812.

It is an arithmetic number, because the mean of its divisors is an integer number (217812).

2⁴³⁵⁶²³ is an apocalyptic number.

435623 is a deficient number, since it is larger than the sum of its proper divisors (1).

435623 is an equidigital number, since it uses as much as digits as its factorization.

435623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 23.

The square root of 435623 is about 660.0174240124. The cubic root of 435623 is about 75.8060033814.

Subtracting from 435623 its sum of digits (23), we obtain a square (435600 = 660²).

The spelling of 435623 in words is "four hundred thirty-five thousand, six hundred twenty-three".