9085717655 has 32 divisors (see below), whose sum is σ = 12708347904. Its totient is φ = 6106478976.

The previous prime is 9085717639. The next prime is 9085717687. The reversal of 9085717655 is 5567175809.

It is a cyclic number.

It is not a de Polignac number, because 9085717655 - 2⁴ = 9085717639 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a junction number, because it is equal to n+sod(n) for n = 9085717597 and 9085717606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2533994 + ... + 2537576.

It is an arithmetic number, because the mean of its divisors is an integer number (397135872).

Almost surely, 2^9085717655 is an apocalyptic number.

9085717655 is a deficient number, since it is larger than the sum of its proper divisors (3622630249).

9085717655 is a wasteful number, since it uses less digits than its factorization.

9085717655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5015.

The product of its (nonzero) digits is 2646000, while the sum is 53.

The square root of 9085717655 is about 95319.0309172308. The cubic root of 9085717655 is about 2086.6666686089. Note that the first 5 decimals are identical.

The spelling of 9085717655 in words is "nine billion, eighty-five million, seven hundred seventeen thousand, six hundred fifty-five".