85877785 has 8 divisors (see below), whose sum is σ = 117775296. Its totient is φ = 58887600.

The previous prime is 85877783. The next prime is 85877797. The reversal of 85877785 is 58777858.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 85877785 - 2¹ = 85877783 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85877783) 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, 1226791 + ... + 1226860.

It is an arithmetic number, because the mean of its divisors is an integer number (14721912).

Almost surely, 2^85877785 is an apocalyptic number.

It is an amenable number.

85877785 is a deficient number, since it is larger than the sum of its proper divisors (31897511).

85877785 is a wasteful number, since it uses less digits than its factorization.

85877785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2453663.

The product of its digits is 4390400, while the sum is 55.

The square root of 85877785 is about 9267.0267615886. The cubic root of 85877785 is about 441.1913050193.

The spelling of 85877785 in words is "eighty-five million, eight hundred seventy-seven thousand, seven hundred eighty-five".