98420681 has 4 divisors (see below), whose sum is σ = 98452932. Its totient is φ = 98388432.

The previous prime is 98420671. The next prime is 98420683. The reversal of 98420681 is 18602489.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18602489 = 277 ⋅67157.

It can be written as a sum of positive squares in 2 ways, for example, as 80281600 + 18139081 = 8960^2 + 4259^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-98420681 is a prime.

It is a super-2 number, since 2×98420681² = 19373260897007522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (98420683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11006 + ... + 17831.

It is an arithmetic number, because the mean of its divisors is an integer number (24613233).

Almost surely, 2^98420681 is an apocalyptic number.

It is an amenable number.

98420681 is a deficient number, since it is larger than the sum of its proper divisors (32251).

98420681 is a wasteful number, since it uses less digits than its factorization.

98420681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32250.

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 98420681 is about 9920.7197823545. The cubic root of 98420681 is about 461.7023891751.

The spelling of 98420681 in words is "ninety-eight million, four hundred twenty thousand, six hundred eighty-one".