85769775 has 144 divisors (see below), whose sum is σ = 194987520. Its totient is φ = 35078400.

The previous prime is 85769773. The next prime is 85769813. The reversal of 85769775 is 57796758.

It is not a de Polignac number, because 85769775 - 2¹ = 85769773 is a prime.

It is a super-4 number, since 4×85769775⁴ (a number of 33 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85769771) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 1207990 + ... + 1208060.

It is an arithmetic number, because the mean of its divisors is an integer number (1354080).

Almost surely, 2^85769775 is an apocalyptic number.

85769775 is an abundant number, since it is smaller than the sum of its proper divisors (109217745).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85769775 is a wasteful number, since it uses less digits than its factorization.

85769775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166 (or 158 counting only the distinct ones).

The product of its digits is 3704400, while the sum is 54.

The square root of 85769775 is about 9261.1972768104. The cubic root of 85769775 is about 441.0062627337.

The spelling of 85769775 in words is "eighty-five million, seven hundred sixty-nine thousand, seven hundred seventy-five".