8634681 has 30 divisors (see below), whose sum is σ = 14194026. Its totient is φ = 5227200.

The previous prime is 8634679. The next prime is 8634697. The reversal of 8634681 is 1864368.

8634681 = 55² + 56² + ... + 296².

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 6125625 + 2509056 = 2475^2 + 1584^2 .

It is not a de Polignac number, because 8634681 - 2¹ = 8634679 is a prime.

It is a super-2 number, since 2×8634681² = 149115431943522, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8634671) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 9361 + ... + 10241.

Almost surely, 2^8634681 is an apocalyptic number.

8634681 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

It is an amenable number.

8634681 is a deficient number, since it is larger than the sum of its proper divisors (5559345).

8634681 is a wasteful number, since it uses less digits than its factorization.

8634681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 915 (or 895 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 8634681 is about 2938.4827717719. The cubic root of 8634681 is about 205.1549967996.

The spelling of 8634681 in words is "eight million, six hundred thirty-four thousand, six hundred eighty-one".