85098665 has 4 divisors (see below), whose sum is σ = 102118404. Its totient is φ = 68078928.

The previous prime is 85098659. The next prime is 85098667. The reversal of 85098665 is 56689058.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 33028009 + 52070656 = 5747^2 + 7216^2 .

It is a cyclic number.

It is not a de Polignac number, because 85098665 - 2⁴ = 85098649 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (85098667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8509862 + ... + 8509871.

It is an arithmetic number, because the mean of its divisors is an integer number (25529601).

Almost surely, 2^85098665 is an apocalyptic number.

It is an amenable number.

85098665 is a deficient number, since it is larger than the sum of its proper divisors (17019739).

85098665 is a wasteful number, since it uses less digits than its factorization.

85098665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17019738.

The product of its (nonzero) digits is 518400, while the sum is 47.

The square root of 85098665 is about 9224.8937663260. The cubic root of 85098665 is about 439.8530242574.

The spelling of 85098665 in words is "eighty-five million, ninety-eight thousand, six hundred sixty-five".