8648681 has 4 divisors (see below), whose sum is σ = 8725332. Its totient is φ = 8572032.

The previous prime is 8648677. The next prime is 8648687. The reversal of 8648681 is 1868468.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4305625 + 4343056 = 2075^2 + 2084^2 .

It is a cyclic number.

It is not a de Polignac number, because 8648681 - 2² = 8648677 is a prime.

It is a super-2 number, since 2×8648681² = 149599366079522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8648687) 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, 38156 + ... + 38381.

It is an arithmetic number, because the mean of its divisors is an integer number (2181333).

Almost surely, 2^8648681 is an apocalyptic number.

It is an amenable number.

8648681 is a deficient number, since it is larger than the sum of its proper divisors (76651).

8648681 is a wasteful number, since it uses less digits than its factorization.

8648681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76650.

The product of its digits is 73728, while the sum is 41.

The square root of 8648681 is about 2940.8639886945. The cubic root of 8648681 is about 205.2658142141.

The spelling of 8648681 in words is "eight million, six hundred forty-eight thousand, six hundred eighty-one".