720452323 has 4 divisors (see below), whose sum is σ = 721542928. Its totient is φ = 719361720.

The previous prime is 720452321. The next prime is 720452357. The reversal of 720452323 is 323254027.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 323254027 = 379 ⋅852913.

It is a cyclic number.

It is not a de Polignac number, because 720452323 - 2¹ = 720452321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 720452291 and 720452300.

It is not an unprimeable number, because it can be changed into a prime (720452321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 544311 + ... + 545632.

It is an arithmetic number, because the mean of its divisors is an integer number (180385732).

Almost surely, 2^720452323 is an apocalyptic number.

720452323 is a deficient number, since it is larger than the sum of its proper divisors (1090605).

720452323 is a wasteful number, since it uses less digits than its factorization.

720452323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1090604.

The product of its (nonzero) digits is 10080, while the sum is 28.

The square root of 720452323 is about 26841.2429481200. The cubic root of 720452323 is about 896.4685991361.

The spelling of 720452323 in words is "seven hundred twenty million, four hundred fifty-two thousand, three hundred twenty-three".