8247478555 has 8 divisors (see below), whose sum is σ = 9902523312. Its totient is φ = 6594283488.

The previous prime is 8247478531. The next prime is 8247478571. The reversal of 8247478555 is 5558747428.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8247478555 - 2⁷ = 8247478427 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8247478496 and 8247478505.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 452592 + ... + 470461.

It is an arithmetic number, because the mean of its divisors is an integer number (1237815414).

Almost surely, 2^8247478555 is an apocalyptic number.

8247478555 is a deficient number, since it is larger than the sum of its proper divisors (1655044757).

8247478555 is a wasteful number, since it uses less digits than its factorization.

8247478555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 924845.

The product of its digits is 12544000, while the sum is 55.

The square root of 8247478555 is about 90815.6294643163. The cubic root of 8247478555 is about 2020.4141355087.

The spelling of 8247478555 in words is "eight billion, two hundred forty-seven million, four hundred seventy-eight thousand, five hundred fifty-five".