98665554 has 32 divisors (see below), whose sum is σ = 214591104. Its totient is φ = 30061440.

The previous prime is 98665547. The next prime is 98665577. The reversal of 98665554 is 45556689.

It is a super-2 number, since 2×98665554² = 19469783092253832, which contains 22 as substring.

It is a nialpdrome in base 10.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1894 + ... + 14174.

It is an arithmetic number, because the mean of its divisors is an integer number (6705972).

Almost surely, 2^98665554 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 98665554, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107295552).

98665554 is an abundant number, since it is smaller than the sum of its proper divisors (115925550).

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

98665554 is a wasteful number, since it uses less digits than its factorization.

98665554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12402.

The product of its digits is 1296000, while the sum is 48.

The square root of 98665554 is about 9933.0536090369. The cubic root of 98665554 is about 462.0849809006.

The spelling of 98665554 in words is "ninety-eight million, six hundred sixty-five thousand, five hundred fifty-four".