98159665 has 4 divisors (see below), whose sum is σ = 117791604. Its totient is φ = 78527728.

The previous prime is 98159651. The next prime is 98159687. The reversal of 98159665 is 56695189.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56695189 = 1867 ⋅30367.

It can be written as a sum of positive squares in 2 ways, for example, as 22695696 + 75463969 = 4764^2 + 8687^2 .

It is a cyclic number.

It is not a de Polignac number, because 98159665 - 2¹¹ = 98157617 is a prime.

It is a Duffinian 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, 9815962 + ... + 9815971.

It is an arithmetic number, because the mean of its divisors is an integer number (29447901).

Almost surely, 2^98159665 is an apocalyptic number.

It is an amenable number.

98159665 is a deficient number, since it is larger than the sum of its proper divisors (19631939).

98159665 is a wasteful number, since it uses less digits than its factorization.

98159665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19631938.

The product of its digits is 583200, while the sum is 49.

The square root of 98159665 is about 9907.5559549265. Note that the first 3 decimals coincide. The cubic root of 98159665 is about 461.2938761101.

The spelling of 98159665 in words is "ninety-eight million, one hundred fifty-nine thousand, six hundred sixty-five".