423664543 has 8 divisors (see below), whose sum is σ = 427142016. Its totient is φ = 420201600.

The previous prime is 423664523. The next prime is 423664559. The reversal of 423664543 is 345466324.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 423664543 - 2⁵ = 423664511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423664523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59283 + ... + 66043.

It is an arithmetic number, because the mean of its divisors is an integer number (53392752).

Almost surely, 2^423664543 is an apocalyptic number.

423664543 is a deficient number, since it is larger than the sum of its proper divisors (3477473).

423664543 is a wasteful number, since it uses less digits than its factorization.

423664543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7265.

The product of its digits is 207360, while the sum is 37.

The square root of 423664543 is about 20583.1130541519. The cubic root of 423664543 is about 751.0589739876.

The spelling of 423664543 in words is "four hundred twenty-three million, six hundred sixty-four thousand, five hundred forty-three".