98888665 has 4 divisors (see below), whose sum is σ = 118666404. Its totient is φ = 79110928.

The previous prime is 98888663. The next prime is 98888683. The reversal of 98888665 is 56688889.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56688889 = 653 ⋅86813.

It can be written as a sum of positive squares in 2 ways, for example, as 45657049 + 53231616 = 6757^2 + 7296^2 .

It is a cyclic number.

It is not a de Polignac number, because 98888665 - 2¹ = 98888663 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (98888663) 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, 9888862 + ... + 9888871.

It is an arithmetic number, because the mean of its divisors is an integer number (29666601).

Almost surely, 2^98888665 is an apocalyptic number.

It is an amenable number.

98888665 is a deficient number, since it is larger than the sum of its proper divisors (19777739).

98888665 is a wasteful number, since it uses less digits than its factorization.

98888665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19777738.

The product of its digits is 6635520, while the sum is 58.

The square root of 98888665 is about 9944.2780029523. The cubic root of 98888665 is about 462.4330207364.

The spelling of 98888665 in words is "ninety-eight million, eight hundred eighty-eight thousand, six hundred sixty-five".