324720493 has 4 divisors (see below), whose sum is σ = 324971388. Its totient is φ = 324469600.

The previous prime is 324720479. The next prime is 324720503. The reversal of 324720493 is 394027423.

It is a happy number.

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 100260169 + 224460324 = 10013^2 + 14982^2 .

It is a cyclic number.

It is not a de Polignac number, because 324720493 - 2⁹ = 324719981 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 (324720413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123496 + ... + 126097.

It is an arithmetic number, because the mean of its divisors is an integer number (81242847).

Almost surely, 2^324720493 is an apocalyptic number.

It is an amenable number.

324720493 is a deficient number, since it is larger than the sum of its proper divisors (250895).

324720493 is a wasteful number, since it uses less digits than its factorization.

324720493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250894.

The product of its (nonzero) digits is 36288, while the sum is 34.

The square root of 324720493 is about 18020.0025804660. The cubic root of 324720493 is about 687.3372788668.

The spelling of 324720493 in words is "three hundred twenty-four million, seven hundred twenty thousand, four hundred ninety-three".