91648098 has 40 divisors (see below), whose sum is σ = 206075100. Its totient is φ = 30443040.

The previous prime is 91648087. The next prime is 91648099. The reversal of 91648098 is 89084619.

It can be written as a sum of positive squares in 2 ways, for example, as 85433049 + 6215049 = 9243^2 + 2493^2 .

It is not an unprimeable number, because it can be changed into a prime (91648099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 55728 + ... + 57348.

Almost surely, 2^91648098 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91648098, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103037550).

91648098 is an abundant number, since it is smaller than the sum of its proper divisors (114427002).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91648098 is a wasteful number, since it uses less digits than its factorization.

91648098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1984 (or 1975 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 91648098 is about 9573.3013114599. The cubic root of 91648098 is about 450.8594242661.

The spelling of 91648098 in words is "ninety-one million, six hundred forty-eight thousand, ninety-eight".