8933681 has 2 divisors, whose sum is σ = 8933682. Its totient is φ = 8933680.

The previous prime is 8933677. The next prime is 8933699. The reversal of 8933681 is 1863398.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8317456 + 616225 = 2884^2 + 785^2 .

It is a cyclic number.

It is not a de Polignac number, because 8933681 - 2² = 8933677 is a prime.

It is a super-2 number, since 2×8933681² = 159621312419522, which contains 22 as substring.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (8933621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4466840 + 4466841.

It is an arithmetic number, because the mean of its divisors is an integer number (4466841).

Almost surely, 2^8933681 is an apocalyptic number.

It is an amenable number.

8933681 is a deficient number, since it is larger than the sum of its proper divisors (1).

8933681 is an equidigital number, since it uses as much as digits as its factorization.

8933681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 38.

The square root of 8933681 is about 2988.9263958820. The cubic root of 8933681 is about 207.4961996691.

The spelling of 8933681 in words is "eight million, nine hundred thirty-three thousand, six hundred eighty-one".