85108769 has 8 divisors (see below), whose sum is σ = 87700200. Its totient is φ = 82532736.

The previous prime is 85108759. The next prime is 85108787. The reversal of 85108769 is 96780158.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 10804369 + 74304400 = 3287^2 + 8620^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85108769 is a prime.

It is a super-2 number, since 2×85108769² = 14487005121390722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85108759) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7907 + ... + 15255.

It is an arithmetic number, because the mean of its divisors is an integer number (10962525).

Almost surely, 2^85108769 is an apocalyptic number.

It is an amenable number.

85108769 is a deficient number, since it is larger than the sum of its proper divisors (2591431).

85108769 is a wasteful number, since it uses less digits than its factorization.

85108769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7699.

The product of its (nonzero) digits is 120960, while the sum is 44.

The square root of 85108769 is about 9225.4413986541. The cubic root of 85108769 is about 439.8704318908.

The spelling of 85108769 in words is "eighty-five million, one hundred eight thousand, seven hundred sixty-nine".