98080781 has 2 divisors, whose sum is σ = 98080782.
Its totient is φ = 98080780.
The previous prime is 98080757. The next prime is 98080789. The reversal of 98080781 is 18708089.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 95374756 + 2706025 = 9766^2 + 1645^2
It is an emirp because it is prime and its reverse (18708089) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 98080781 - 214 = 98064397 is a prime.
It is a super-2 number, since 2×980807812 = 19239679203139922, which contains 22 as substring.
It is a Chen prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (98080789) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49040390 + 49040391.
It is an arithmetic number, because the mean of its divisors is an integer number (49040391).
Almost surely, 298080781 is an apocalyptic number.
It is an amenable number.
98080781 is a deficient number, since it is larger than the sum of its proper divisors (1).
98080781 is an equidigital number, since it uses as much as digits as its factorization.
98080781 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 32256, while the sum is 41.
The square root of 98080781 is about 9903.5741527996.
The cubic root of 98080781 is about 461.1702732088.
The spelling of 98080781 in words is "ninety-eight million, eighty thousand, seven hundred eighty-one".