850688077 has 4 divisors (see below), whose sum is σ = 860246460. Its totient is φ = 841129696.

The previous prime is 850688063. The next prime is 850688099. The reversal of 850688077 is 770886058.

850688077 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 298391076 + 552297001 = 17274^2 + 23501^2 .

It is a cyclic number.

It is not a de Polignac number, because 850688077 - 2⁷ = 850687949 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 850688077.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (850688057) 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, 4779058 + ... + 4779235.

It is an arithmetic number, because the mean of its divisors is an integer number (215061615).

Almost surely, 2^850688077 is an apocalyptic number.

It is an amenable number.

850688077 is a deficient number, since it is larger than the sum of its proper divisors (9558383).

850688077 is an equidigital number, since it uses as much as digits as its factorization.

850688077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9558382.

The product of its (nonzero) digits is 752640, while the sum is 49.

The square root of 850688077 is about 29166.5575102719. The cubic root of 850688077 is about 947.5237735348.

The spelling of 850688077 in words is "eight hundred fifty million, six hundred eighty-eight thousand, seventy-seven".