8287681 has 4 divisors (see below), whose sum is σ = 8331264. Its totient is φ = 8244100.

The previous prime is 8287679. The next prime is 8287693. The reversal of 8287681 is 1867828.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8287681 - 2¹ = 8287679 is a prime.

It is a super-2 number, since 2×8287681² = 137371312715522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8287481) 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, 21505 + ... + 21886.

It is an arithmetic number, because the mean of its divisors is an integer number (2082816).

Almost surely, 2^8287681 is an apocalyptic number.

It is an amenable number.

8287681 is a deficient number, since it is larger than the sum of its proper divisors (43583).

8287681 is a wasteful number, since it uses less digits than its factorization.

8287681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43582.

The product of its digits is 43008, while the sum is 40.

The square root of 8287681 is about 2878.8332706150. The cubic root of 8287681 is about 202.3691661097.

The spelling of 8287681 in words is "eight million, two hundred eighty-seven thousand, six hundred eighty-one".