720324853 has 4 divisors (see below), whose sum is σ = 725823648. Its totient is φ = 714826060.

The previous prime is 720324851. The next prime is 720324883. The reversal of 720324853 is 358423027.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 720324853 - 2¹ = 720324851 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 (720324851) 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, 2749201 + ... + 2749462.

It is an arithmetic number, because the mean of its divisors is an integer number (181455912).

Almost surely, 2^720324853 is an apocalyptic number.

It is an amenable number.

720324853 is a deficient number, since it is larger than the sum of its proper divisors (5498795).

720324853 is a wasteful number, since it uses less digits than its factorization.

720324853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5498794.

The product of its (nonzero) digits is 40320, while the sum is 34.

The square root of 720324853 is about 26838.8683256206. The cubic root of 720324853 is about 896.4157251343.

The spelling of 720324853 in words is "seven hundred twenty million, three hundred twenty-four thousand, eight hundred fifty-three".