85277645 has 4 divisors (see below), whose sum is σ = 102333180. Its totient is φ = 68222112.

The previous prime is 85277623. The next prime is 85277657. The reversal of 85277645 is 54677258.

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 19245769 + 66031876 = 4387^2 + 8126^2 .

It is a cyclic number.

It is not a de Polignac number, because 85277645 - 2¹⁰ = 85276621 is a prime.

It is a super-3 number, since 3×85277645³ (a number of 25 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 85277596 and 85277605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8527760 + ... + 8527769.

It is an arithmetic number, because the mean of its divisors is an integer number (25583295).

Almost surely, 2^85277645 is an apocalyptic number.

It is an amenable number.

85277645 is a deficient number, since it is larger than the sum of its proper divisors (17055535).

85277645 is a wasteful number, since it uses less digits than its factorization.

85277645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17055534.

The product of its digits is 470400, while the sum is 44.

The square root of 85277645 is about 9234.5895956453. The cubic root of 85277645 is about 440.1611754571.

The spelling of 85277645 in words is "eighty-five million, two hundred seventy-seven thousand, six hundred forty-five".