85939765 has 8 divisors (see below), whose sum is σ = 105073848. Its totient is φ = 67454400.

The previous prime is 85939747. The next prime is 85939771. The reversal of 85939765 is 56793958.

It can be written as a sum of positive squares in 4 ways, for example, as 2436721 + 83503044 = 1561^2 + 9138^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 85939765 - 2⁹ = 85939253 is a prime.

It is a Duffinian number.

It is a plaindrome in base 11.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161886 + ... + 162415.

It is an arithmetic number, because the mean of its divisors is an integer number (13134231).

Almost surely, 2^85939765 is an apocalyptic number.

It is an amenable number.

85939765 is a deficient number, since it is larger than the sum of its proper divisors (19134083).

85939765 is a wasteful number, since it uses less digits than its factorization.

85939765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324359.

The product of its digits is 2041200, while the sum is 52.

The square root of 85939765 is about 9270.3702730797. The cubic root of 85939765 is about 441.2974188461.

The spelling of 85939765 in words is "eighty-five million, nine hundred thirty-nine thousand, seven hundred sixty-five".