85776538 has 4 divisors (see below), whose sum is σ = 128664810. Its totient is φ = 42888268.

The previous prime is 85776521. The next prime is 85776539. The reversal of 85776538 is 83567758.

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

It can be written as a sum of positive squares in only one way, i.e., 57866449 + 27910089 = 7607^2 + 5283^2 .

It is a super-3 number, since 3×85776538³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 85776491 and 85776500.

It is not an unprimeable number, because it can be changed into a prime (85776539) 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 as a sum of consecutive naturals, namely, 21444133 + ... + 21444136.

Almost surely, 2^85776538 is an apocalyptic number.

85776538 is a deficient number, since it is larger than the sum of its proper divisors (42888272).

85776538 is a wasteful number, since it uses less digits than its factorization.

85776538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42888271.

The product of its digits is 1411200, while the sum is 49.

The square root of 85776538 is about 9261.5623951901. The cubic root of 85776538 is about 441.0178536349.

The spelling of 85776538 in words is "eighty-five million, seven hundred seventy-six thousand, five hundred thirty-eight".