8653649647 has 4 divisors (see below), whose sum is σ = 8654003416. Its totient is φ = 8653295880.

The previous prime is 8653649603. The next prime is 8653649687. The reversal of 8653649647 is 7469463568.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8653649647 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8653649591 and 8653649600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8653649687) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137229 + ... + 190102.

It is an arithmetic number, because the mean of its divisors is an integer number (2163500854).

Almost surely, 2^8653649647 is an apocalyptic number.

8653649647 is a deficient number, since it is larger than the sum of its proper divisors (353769).

8653649647 is a wasteful number, since it uses less digits than its factorization.

8653649647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353768.

The product of its digits is 26127360, while the sum is 58.

The square root of 8653649647 is about 93024.9947433484. The cubic root of 8653649647 is about 2053.0511493234.

The spelling of 8653649647 in words is "eight billion, six hundred fifty-three million, six hundred forty-nine thousand, six hundred forty-seven".