8269681 has 6 divisors (see below), whose sum is σ = 9619890. Its totient is φ = 7088256.

The previous prime is 8269663. The next prime is 8269687. The reversal of 8269681 is 1869628.

It can be written as a sum of positive squares in only one way, i.e., 7376656 + 893025 = 2716^2 + 945^2 .

It is a de Polignac number, because none of the positive numbers 2^k-8269681 is a prime.

It is a super-2 number, since 2×8269681² = 136775247683522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8269687) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 84336 + ... + 84433.

It is an arithmetic number, because the mean of its divisors is an integer number (1603315).

Almost surely, 2^8269681 is an apocalyptic number.

It is an amenable number.

8269681 is a deficient number, since it is larger than the sum of its proper divisors (1350209).

8269681 is a wasteful number, since it uses less digits than its factorization.

8269681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168783 (or 168776 counting only the distinct ones).

The product of its digits is 41472, while the sum is 40.

The square root of 8269681 is about 2875.7053047905. The cubic root of 8269681 is about 202.2225515007. Note that the first 3 decimals are identical.

The spelling of 8269681 in words is "eight million, two hundred sixty-nine thousand, six hundred eighty-one".