662320543 has 4 divisors (see below), whose sum is σ = 663042160. Its totient is φ = 661598928.

The previous prime is 662320537. The next prime is 662320553. The reversal of 662320543 is 345023266.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 662320543 - 2¹⁷ = 662189471 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 (662320513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 359430 + ... + 361267.

It is an arithmetic number, because the mean of its divisors is an integer number (165760540).

Almost surely, 2^662320543 is an apocalyptic number.

662320543 is a deficient number, since it is larger than the sum of its proper divisors (721617).

662320543 is an equidigital number, since it uses as much as digits as its factorization.

662320543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721616.

The product of its (nonzero) digits is 25920, while the sum is 31.

The square root of 662320543 is about 25735.5890354194. The cubic root of 662320543 is about 871.6779801445.

The spelling of 662320543 in words is "six hundred sixty-two million, three hundred twenty thousand, five hundred forty-three".