423635605 has 4 divisors (see below), whose sum is σ = 508362732. Its totient is φ = 338908480.

The previous prime is 423635599. The next prime is 423635621. The reversal of 423635605 is 506536324.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 304956369 + 118679236 = 17463^2 + 10894^2 .

It is not a de Polignac number, because 423635605 - 2⁷ = 423635477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 42363556 + ... + 42363565.

It is an arithmetic number, because the mean of its divisors is an integer number (127090683).

Almost surely, 2^423635605 is an apocalyptic number.

It is an amenable number.

423635605 is a deficient number, since it is larger than the sum of its proper divisors (84727127).

423635605 is an equidigital number, since it uses as much as digits as its factorization.

423635605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84727126.

The product of its (nonzero) digits is 64800, while the sum is 34.

The square root of 423635605 is about 20582.4100872565. The cubic root of 423635605 is about 751.0418734775.

The spelling of 423635605 in words is "four hundred twenty-three million, six hundred thirty-five thousand, six hundred five".