10099681 has 2 divisors, whose sum is σ = 10099682. Its totient is φ = 10099680.

The previous prime is 10099669. The next prime is 10099699. The reversal of 10099681 is 18699001.

10099681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8317456 + 1782225 = 2884^2 + 1335^2 .

It is a cyclic number.

It is not a de Polignac number, because 10099681 - 2⁹ = 10099169 is a prime.

It is a super-2 number, since 2×10099681² = 204007112603522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10099651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5049840 + 5049841.

It is an arithmetic number, because the mean of its divisors is an integer number (5049841).

Almost surely, 2^10099681 is an apocalyptic number.

It is an amenable number.

10099681 is a deficient number, since it is larger than the sum of its proper divisors (1).

10099681 is an equidigital number, since it uses as much as digits as its factorization.

10099681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 34.

The square root of 10099681 is about 3177.9995280050. Note that the first 3 decimals coincide. The cubic root of 10099681 is about 216.1569575347.

The spelling of 10099681 in words is "ten million, ninety-nine thousand, six hundred eighty-one".