98661655 has 4 divisors (see below), whose sum is σ = 118393992. Its totient is φ = 78929320.

The previous prime is 98661637. The next prime is 98661679. The reversal of 98661655 is 55616689.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55616689 = 61 ⋅911749.

It is not a de Polignac number, because 98661655 - 2¹¹ = 98659607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9866161 + ... + 9866170.

It is an arithmetic number, because the mean of its divisors is an integer number (29598498).

Almost surely, 2^98661655 is an apocalyptic number.

98661655 is a deficient number, since it is larger than the sum of its proper divisors (19732337).

98661655 is a wasteful number, since it uses less digits than its factorization.

98661655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19732336.

The product of its digits is 388800, while the sum is 46.

The square root of 98661655 is about 9932.8573431818. The cubic root of 98661655 is about 462.0788940310.

The spelling of 98661655 in words is "ninety-eight million, six hundred sixty-one thousand, six hundred fifty-five".