98497681 has 2 divisors, whose sum is σ = 98497682. Its totient is φ = 98497680.

The previous prime is 98497669. The next prime is 98497687. The reversal of 98497681 is 18679489.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55056400 + 43441281 = 7420^2 + 6591^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-98497681 is a prime.

It is a super-2 number, since 2×98497681² = 19403586324755522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (98497687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49248840 + 49248841.

It is an arithmetic number, because the mean of its divisors is an integer number (49248841).

Almost surely, 2^98497681 is an apocalyptic number.

It is an amenable number.

98497681 is a deficient number, since it is larger than the sum of its proper divisors (1).

98497681 is an equidigital number, since it uses as much as digits as its factorization.

98497681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 870912, while the sum is 52.

The square root of 98497681 is about 9924.5997904198. The cubic root of 98497681 is about 461.8227629842.

The spelling of 98497681 in words is "ninety-eight million, four hundred ninety-seven thousand, six hundred eighty-one".