8664355785 has 8 divisors (see below), whose sum is σ = 13862969280. Its totient is φ = 4620989744.

The previous prime is 8664355753. The next prime is 8664355793. The reversal of 8664355785 is 5875534668.

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 8664355785 - 2⁵ = 8664355753 is a prime.

It is a super-2 number, since 2×8664355785² (a number of 21 digits) contains 22 as substring.

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, 288811845 + ... + 288811874.

It is an arithmetic number, because the mean of its divisors is an integer number (1732871160).

Almost surely, 2^8664355785 is an apocalyptic number.

It is an amenable number.

8664355785 is a deficient number, since it is larger than the sum of its proper divisors (5198613495).

8664355785 is a wasteful number, since it uses less digits than its factorization.

8664355785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577623727.

The product of its digits is 24192000, while the sum is 57.

The square root of 8664355785 is about 93082.5213721674. The cubic root of 8664355785 is about 2053.8974662543.

The spelling of 8664355785 in words is "eight billion, six hundred sixty-four million, three hundred fifty-five thousand, seven hundred eighty-five".