8653898664 has 24 divisors (see below), whose sum is σ = 23437642410. Its totient is φ = 2884632864.

The previous prime is 8653898657. The next prime is 8653898677. The reversal of 8653898664 is 4668983568.

8653898664 is a `hidden beast` number, since 8 + 6 + 538 + 98 + 6 + 6 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 7182562500 + 1471336164 = 84750^2 + 38358^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 60096447 + ... + 60096590.

Almost surely, 2^8653898664 is an apocalyptic number.

It is an amenable number.

8653898664 is an abundant number, since it is smaller than the sum of its proper divisors (14783743746).

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

8653898664 is a wasteful number, since it uses less digits than its factorization.

8653898664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120193049 (or 120193042 counting only the distinct ones).

The product of its digits is 59719680, while the sum is 63.

The square root of 8653898664 is about 93026.3331750747. Note that the first 3 decimals coincide. The cubic root of 8653898664 is about 2053.0708419678.

The spelling of 8653898664 in words is "eight billion, six hundred fifty-three million, eight hundred ninety-eight thousand, six hundred sixty-four".