8720846655 has 16 divisors (see below), whose sum is σ = 14055207264. Its totient is φ = 4617167360.

The previous prime is 8720846597. The next prime is 8720846707. The reversal of 8720846655 is 5566480278.

It is a happy number.

It is not a de Polignac number, because 8720846655 - 2⁶ = 8720846591 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8720846598 and 8720846607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2119806 + ... + 2123915.

It is an arithmetic number, because the mean of its divisors is an integer number (878450454).

Almost surely, 2^8720846655 is an apocalyptic number.

8720846655 is a deficient number, since it is larger than the sum of its proper divisors (5334360609).

8720846655 is a wasteful number, since it uses less digits than its factorization.

8720846655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4243866.

The product of its (nonzero) digits is 3225600, while the sum is 51.

The square root of 8720846655 is about 93385.4734688431. The cubic root of 8720846655 is about 2058.3515463247.

The spelling of 8720846655 in words is "eight billion, seven hundred twenty million, eight hundred forty-six thousand, six hundred fifty-five".