8681481 has 6 divisors (see below), whose sum is σ = 12539930. Its totient is φ = 5787648.

The previous prime is 8681473. The next prime is 8681483. The reversal of 8681481 is 1841868.

It can be written as a sum of positive squares in only one way, i.e., 7241481 + 1440000 = 2691^2 + 1200^2 .

It is not a de Polignac number, because 8681481 - 2³ = 8681473 is a prime.

It is a super-2 number, since 2×8681481² = 150736224706722, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8681483) 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, 482296 + ... + 482313.

Almost surely, 2^8681481 is an apocalyptic number.

It is an amenable number.

8681481 is a deficient number, since it is larger than the sum of its proper divisors (3858449).

8681481 is a wasteful number, since it uses less digits than its factorization.

8681481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 964615 (or 964612 counting only the distinct ones).

The product of its digits is 12288, while the sum is 36.

The square root of 8681481 is about 2946.4353038884. The cubic root of 8681481 is about 205.5249760966.

The spelling of 8681481 in words is "eight million, six hundred eighty-one thousand, four hundred eighty-one".