8049681 has 6 divisors (see below), whose sum is σ = 11627330. Its totient is φ = 5366448.

The previous prime is 8049611. The next prime is 8049703. The reversal of 8049681 is 1869408.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 5022081 + 3027600 = 2241^2 + 1740^2 .

It is not a de Polignac number, because 8049681 - 2⁹ = 8049169 is a prime.

It is a super-2 number, since 2×8049681² = 129594728403522, which contains 22 as substring.

It is a Duffinian number.

8049681 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8049611) 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 5 ways as a sum of consecutive naturals, for example, 447196 + ... + 447213.

Almost surely, 2^8049681 is an apocalyptic number.

It is an amenable number.

8049681 is a deficient number, since it is larger than the sum of its proper divisors (3577649).

8049681 is a wasteful number, since it uses less digits than its factorization.

8049681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894415 (or 894412 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 8049681 is about 2837.1959749020. The cubic root of 8049681 is about 200.4131542634.

The spelling of 8049681 in words is "eight million, forty-nine thousand, six hundred eighty-one".