85870773 has 10 divisors (see below), whose sum is σ = 128276214. Its totient is φ = 57247128.

The previous prime is 85870727. The next prime is 85870787. The reversal of 85870773 is 37707858.

It can be written as a sum of positive squares in only one way, i.e., 74960964 + 10909809 = 8658^2 + 3303^2 .

It is not a de Polignac number, because 85870773 - 2⁸ = 85870517 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85870793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 529986 + ... + 530147.

Almost surely, 2^85870773 is an apocalyptic number.

It is an amenable number.

85870773 is a deficient number, since it is larger than the sum of its proper divisors (42405441).

85870773 is a wasteful number, since it uses less digits than its factorization.

85870773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1060145 (or 1060136 counting only the distinct ones).

The product of its (nonzero) digits is 329280, while the sum is 45.

The square root of 85870773 is about 9266.6484232434. The cubic root of 85870773 is about 441.1792968007.

It can be divided in two parts, 858 and 70773, that added together give a triangular number (71631 = T₃₇₈).

The spelling of 85870773 in words is "eighty-five million, eight hundred seventy thousand, seven hundred seventy-three".