8946787681 has 8 divisors (see below), whose sum is σ = 9704320640. Its totient is φ = 8199157392.

The previous prime is 8946787673. The next prime is 8946787699. The reversal of 8946787681 is 1867876498.

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 8946787681 - 2³ = 8946787673 is a prime.

It is a super-2 number, since 2×8946787681² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8946787781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2473785 + ... + 2477398.

It is an arithmetic number, because the mean of its divisors is an integer number (1213040080).

Almost surely, 2^8946787681 is an apocalyptic number.

It is an amenable number.

8946787681 is a deficient number, since it is larger than the sum of its proper divisors (757532959).

8946787681 is a wasteful number, since it uses less digits than its factorization.

8946787681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4951335.

The product of its digits is 32514048, while the sum is 64.

The square root of 8946787681 is about 94587.4604849924. The cubic root of 8946787681 is about 2075.9762324447.

The spelling of 8946787681 in words is "eight billion, nine hundred forty-six million, seven hundred eighty-seven thousand, six hundred eighty-one".