85098609 has 6 divisors (see below), whose sum is σ = 122920226. Its totient is φ = 56732400.

The previous prime is 85098593. The next prime is 85098641. The reversal of 85098609 is 90689058.

It can be written as a sum of positive squares in only one way, i.e., 77792400 + 7306209 = 8820^2 + 2703^2 .

It is not a de Polignac number, because 85098609 - 2⁴ = 85098593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85098649) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4727692 + ... + 4727709.

Almost surely, 2^85098609 is an apocalyptic number.

It is an amenable number.

85098609 is a deficient number, since it is larger than the sum of its proper divisors (37821617).

85098609 is a wasteful number, since it uses less digits than its factorization.

85098609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9455407 (or 9455404 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The square root of 85098609 is about 9224.8907310602. The cubic root of 85098609 is about 439.8529277742.

The spelling of 85098609 in words is "eighty-five million, ninety-eight thousand, six hundred nine".