8603681 has 2 divisors, whose sum is σ = 8603682. Its totient is φ = 8603680.

The previous prime is 8603677. The next prime is 8603689. The reversal of 8603681 is 1863068.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8317456 + 286225 = 2884^2 + 535^2 .

It is a cyclic number.

It is not a de Polignac number, because 8603681 - 2² = 8603677 is a prime.

It is a super-2 number, since 2×8603681² = 148046653499522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8603689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4301840 + 4301841.

It is an arithmetic number, because the mean of its divisors is an integer number (4301841).

Almost surely, 2^8603681 is an apocalyptic number.

It is an amenable number.

8603681 is a deficient number, since it is larger than the sum of its proper divisors (1).

8603681 is an equidigital number, since it uses as much as digits as its factorization.

8603681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 8603681 is about 2933.2031978709. The cubic root of 8603681 is about 204.9091884117.

The spelling of 8603681 in words is "eight million, six hundred three thousand, six hundred eighty-one".