8557701678 has 80 divisors (see below), whose sum is σ = 20138136480. Its totient is φ = 2710977984.

The previous prime is 8557701667. The next prime is 8557701703. The reversal of 8557701678 is 8761077558.

It is a happy number.

8557701678 is a `hidden beast` number, since 8 + 5 + 577 + 0 + 1 + 67 + 8 = 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 a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 577668 + ... + 592296.

It is an arithmetic number, because the mean of its divisors is an integer number (251726706).

Almost surely, 2^8557701678 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8557701678, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10069068240).

8557701678 is an abundant number, since it is smaller than the sum of its proper divisors (11580434802).

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

8557701678 is a wasteful number, since it uses less digits than its factorization.

8557701678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14823 (or 14814 counting only the distinct ones).

The product of its (nonzero) digits is 3292800, while the sum is 54.

The square root of 8557701678 is about 92507.8465753041. The cubic root of 8557701678 is about 2045.4351473457.

The spelling of 8557701678 in words is "eight billion, five hundred fifty-seven million, seven hundred one thousand, six hundred seventy-eight".