85775077 has 4 divisors (see below), whose sum is σ = 85834476. Its totient is φ = 85715680.

The previous prime is 85775059. The next prime is 85775099. The reversal of 85775077 is 77057758.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 46662561 + 39112516 = 6831^2 + 6254^2 .

It is a cyclic number.

It is not a de Polignac number, because 85775077 - 2²³ = 77386469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85775017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27478 + ... + 30439.

It is an arithmetic number, because the mean of its divisors is an integer number (21458619).

Almost surely, 2^85775077 is an apocalyptic number.

It is an amenable number.

85775077 is a deficient number, since it is larger than the sum of its proper divisors (59399).

85775077 is a wasteful number, since it uses less digits than its factorization.

85775077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59398.

The product of its (nonzero) digits is 480200, while the sum is 46.

The square root of 85775077 is about 9261.4835204734. The cubic root of 85775077 is about 441.0153497227.

The spelling of 85775077 in words is "eighty-five million, seven hundred seventy-five thousand, seventy-seven".