720479424673 has 4 divisors (see below), whose sum is σ = 723138020608. Its totient is φ = 717820828740.

The previous prime is 720479424647. The next prime is 720479424757. The reversal of 720479424673 is 376424974027.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-720479424673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (720479424473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1329297561 + ... + 1329298102.

It is an arithmetic number, because the mean of its divisors is an integer number (180784505152).

Almost surely, 2^720479424673 is an apocalyptic number.

It is an amenable number.

720479424673 is a deficient number, since it is larger than the sum of its proper divisors (2658595935).

720479424673 is a wasteful number, since it uses less digits than its factorization.

720479424673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2658595934.

The product of its (nonzero) digits is 14224896, while the sum is 55.

The spelling of 720479424673 in words is "seven hundred twenty billion, four hundred seventy-nine million, four hundred twenty-four thousand, six hundred seventy-three".