8416681 has 24 divisors (see below), whose sum is σ = 10747464. Its totient is φ = 6531840.

The previous prime is 8416673. The next prime is 8416693. The reversal of 8416681 is 1866148.

It can be written as a sum of positive squares in 4 ways, for example, as 99225 + 8317456 = 315^2 + 2884^2 .

It is not a de Polignac number, because 8416681 - 2³ = 8416673 is a prime.

It is a super-2 number, since 2×8416681² = 141681038111522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8416621) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46411 + ... + 46591.

It is an arithmetic number, because the mean of its divisors is an integer number (447811).

Almost surely, 2^8416681 is an apocalyptic number.

It is an amenable number.

8416681 is a deficient number, since it is larger than the sum of its proper divisors (2330783).

8416681 is a wasteful number, since it uses less digits than its factorization.

8416681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281 (or 274 counting only the distinct ones).

The product of its digits is 9216, while the sum is 34.

The square root of 8416681 is about 2901.1516678726. The cubic root of 8416681 is about 203.4137419745.

The spelling of 8416681 in words is "eight million, four hundred sixteen thousand, six hundred eighty-one".