85297877 has 12 divisors (see below), whose sum is σ = 99470700. Its totient is φ = 72930816.

The previous prime is 85297873. The next prime is 85297889. The reversal of 85297877 is 77879258.

It can be written as a sum of positive squares in 2 ways, for example, as 36493681 + 48804196 = 6041^2 + 6986^2 .

It is not a de Polignac number, because 85297877 - 2² = 85297873 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85297871) 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 11 ways as a sum of consecutive naturals, for example, 20063 + ... + 23939.

It is an arithmetic number, because the mean of its divisors is an integer number (8289225).

Almost surely, 2^85297877 is an apocalyptic number.

It is an amenable number.

85297877 is a deficient number, since it is larger than the sum of its proper divisors (14172823).

85297877 is a wasteful number, since it uses less digits than its factorization.

85297877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4340 (or 4333 counting only the distinct ones).

The product of its digits is 1975680, while the sum is 53.

The square root of 85297877 is about 9235.6849773041. The cubic root of 85297877 is about 440.1959819089.

The spelling of 85297877 in words is "eighty-five million, two hundred ninety-seven thousand, eight hundred seventy-seven".