85457787 has 8 divisors (see below), whose sum is σ = 113986560. Its totient is φ = 56950440.

The previous prime is 85457777. The next prime is 85457791. The reversal of 85457787 is 78775458.

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

It is a de Polignac number, because none of the positive numbers 2^k-85457787 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85457777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11862 + ... + 17652.

It is an arithmetic number, because the mean of its divisors is an integer number (14248320).

Almost surely, 2^85457787 is an apocalyptic number.

85457787 is a deficient number, since it is larger than the sum of its proper divisors (28528773).

85457787 is a wasteful number, since it uses less digits than its factorization.

85457787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10713.

The product of its digits is 2195200, while the sum is 51.

The square root of 85457787 is about 9244.3381050241. The cubic root of 85457787 is about 440.4708922167.

The spelling of 85457787 in words is "eighty-five million, four hundred fifty-seven thousand, seven hundred eighty-seven".