98567681 has 2 divisors, whose sum is σ = 98567682. Its totient is φ = 98567680.

The previous prime is 98567671. The next prime is 98567699. The reversal of 98567681 is 18676589.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97693456 + 874225 = 9884^2 + 935^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-98567681 is a prime.

It is a super-2 number, since 2×98567681² = 19431175475435522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (98567641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49283840 + 49283841.

It is an arithmetic number, because the mean of its divisors is an integer number (49283841).

Almost surely, 2^98567681 is an apocalyptic number.

It is an amenable number.

98567681 is a deficient number, since it is larger than the sum of its proper divisors (1).

98567681 is an equidigital number, since it uses as much as digits as its factorization.

98567681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 725760, while the sum is 50.

The square root of 98567681 is about 9928.1257546427. The cubic root of 98567681 is about 461.9321392929.

The spelling of 98567681 in words is "ninety-eight million, five hundred sixty-seven thousand, six hundred eighty-one".