8720473775 has 24 divisors (see below), whose sum is σ = 11819024784. Its totient is φ = 6343603200.

The previous prime is 8720473747. The next prime is 8720473787. The reversal of 8720473775 is 5773740278.

It is not a de Polignac number, because 8720473775 - 2⁶ = 8720473711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 178466 + ... + 222015.

It is an arithmetic number, because the mean of its divisors is an integer number (492459366).

Almost surely, 2^8720473775 is an apocalyptic number.

8720473775 is a deficient number, since it is larger than the sum of its proper divisors (3098551009).

8720473775 is a wasteful number, since it uses less digits than its factorization.

8720473775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400571 (or 400566 counting only the distinct ones).

The product of its (nonzero) digits is 2304960, while the sum is 50.

The square root of 8720473775 is about 93383.4769913822. The cubic root of 8720473775 is about 2058.3222093771.

The spelling of 8720473775 in words is "eight billion, seven hundred twenty million, four hundred seventy-three thousand, seven hundred seventy-five".