85000077 has 8 divisors (see below), whose sum is σ = 125926080. Its totient is φ = 56666700.

The previous prime is 85000067. The next prime is 85000081. The reversal of 85000077 is 77000058.

It is not a de Polignac number, because 85000077 - 2¹¹ = 84998029 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 3148151 = 85000077 / (8 + 5 + 0 + 0 + 0 + 0 + 7 + 7).

It is a self number, because there is not a number n which added to its sum of digits gives 85000077.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85000007) 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, 1574049 + ... + 1574102.

It is an arithmetic number, because the mean of its divisors is an integer number (15740760).

Almost surely, 2^85000077 is an apocalyptic number.

It is an amenable number.

85000077 is a deficient number, since it is larger than the sum of its proper divisors (40926003).

85000077 is a wasteful number, since it uses less digits than its factorization.

85000077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3148160 (or 3148154 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 27.

The square root of 85000077 is about 9219.5486332033. The cubic root of 85000077 is about 439.6830999828.

The spelling of 85000077 in words is "eighty-five million, seventy-seven", and thus it is an aban number and an uban number.