8581357705 has 8 divisors (see below), whose sum is σ = 10298131272. Its totient is φ = 6864751488.

The previous prime is 8581357691. The next prime is 8581357711. The reversal of 8581357705 is 5077531858.

It can be written as a sum of positive squares in 4 ways, for example, as 1453439376 + 7127918329 = 38124^2 + 84427^2 .

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 8581357705 - 2²¹ = 8579260553 is a prime.

It is a super-2 number, since 2×8581357705² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156237 + ... + 203893.

It is an arithmetic number, because the mean of its divisors is an integer number (1287266409).

Almost surely, 2^8581357705 is an apocalyptic number.

It is an amenable number.

8581357705 is a deficient number, since it is larger than the sum of its proper divisors (1716773567).

8581357705 is a wasteful number, since it uses less digits than its factorization.

8581357705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83675.

The product of its (nonzero) digits is 1176000, while the sum is 49.

The square root of 8581357705 is about 92635.6179069369. The cubic root of 8581357705 is about 2047.3181432721.

The spelling of 8581357705 in words is "eight billion, five hundred eighty-one million, three hundred fifty-seven thousand, seven hundred five".