85780927 has 4 divisors (see below), whose sum is σ = 88738920. Its totient is φ = 82822936.

The previous prime is 85780909. The next prime is 85780949. The reversal of 85780927 is 72908758.

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

It is a cyclic number.

It is not a de Polignac number, because 85780927 - 2¹¹ = 85778879 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 (85780957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1478953 + ... + 1479010.

It is an arithmetic number, because the mean of its divisors is an integer number (22184730).

Almost surely, 2^85780927 is an apocalyptic number.

85780927 is a deficient number, since it is larger than the sum of its proper divisors (2957993).

85780927 is a wasteful number, since it uses less digits than its factorization.

85780927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2957992.

The product of its (nonzero) digits is 282240, while the sum is 46.

The square root of 85780927 is about 9261.7993392213. The cubic root of 85780927 is about 441.0253754833.

The spelling of 85780927 in words is "eighty-five million, seven hundred eighty thousand, nine hundred twenty-seven".