8349707556 has 144 divisors (see below), whose sum is σ = 23375822400. Its totient is φ = 2568503808.

The previous prime is 8349707551. The next prime is 8349707581. The reversal of 8349707556 is 6557079438.

8349707556 is a `hidden beast` number, since 83 + 4 + 9 + 7 + 0 + 7 + 556 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (8349707551) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5156515 + ... + 5158133.

It is an arithmetic number, because the mean of its divisors is an integer number (162332100).

Almost surely, 2^8349707556 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8349707556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11687911200).

8349707556 is an abundant number, since it is smaller than the sum of its proper divisors (15026114844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8349707556 is a wasteful number, since it uses less digits than its factorization.

8349707556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1755 (or 1694 counting only the distinct ones).

The product of its (nonzero) digits is 6350400, while the sum is 54.

The square root of 8349707556 is about 91376.7342161012. The cubic root of 8349707556 is about 2028.7276808134.

The spelling of 8349707556 in words is "eight billion, three hundred forty-nine million, seven hundred seven thousand, five hundred fifty-six".