9016681 has 4 divisors (see below), whose sum is σ = 9547092. Its totient is φ = 8486272.

The previous prime is 9016649. The next prime is 9016687. The reversal of 9016681 is 1866109.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1866109 = 7 ⋅266587.

It can be written as a sum of positive squares in 2 ways, for example, as 6456681 + 2560000 = 2541^2 + 1600^2 .

It is a cyclic number.

It is not a de Polignac number, because 9016681 - 2⁵ = 9016649 is a prime.

It is a super-2 number, since 2×9016681² = 162601072511522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9016687) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 265180 + ... + 265213.

It is an arithmetic number, because the mean of its divisors is an integer number (2386773).

Almost surely, 2^9016681 is an apocalyptic number.

It is an amenable number.

9016681 is a deficient number, since it is larger than the sum of its proper divisors (530411).

9016681 is a wasteful number, since it uses less digits than its factorization.

9016681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530410.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 9016681 is about 3002.7788796380. The cubic root of 9016681 is about 208.1368136512.

The spelling of 9016681 in words is "nine million, sixteen thousand, six hundred eighty-one".