85704187 has 8 divisors (see below), whose sum is σ = 89523360. Its totient is φ = 81892800.

The previous prime is 85704169. The next prime is 85704197. The reversal of 85704187 is 78140758.

85704187 is nontrivially palindromic in base 15.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85704187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85704107) 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, 40389 + ... + 42457.

It is an arithmetic number, because the mean of its divisors is an integer number (11190420).

Almost surely, 2^85704187 is an apocalyptic number.

85704187 is a deficient number, since it is larger than the sum of its proper divisors (3819173).

85704187 is a wasteful number, since it uses less digits than its factorization.

85704187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3893.

The product of its (nonzero) digits is 62720, while the sum is 40.

The square root of 85704187 is about 9257.6555887546. The cubic root of 85704187 is about 440.8938218231.

It can be divided in two parts, 85 and 704187, that multiplied together give a palindrome (59855895).

The spelling of 85704187 in words is "eighty-five million, seven hundred four thousand, one hundred eighty-seven".