85718519 has 8 divisors (see below), whose sum is σ = 93342000. Its totient is φ = 78406272.

The previous prime is 85718491. The next prime is 85718533. The reversal of 85718519 is 91581758.

It is a happy number.

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-85718519 is a prime.

It is a super-2 number, since 2×85718519² = 14695328999106722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 85718519.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85718569) 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, 77234 + ... + 78335.

It is an arithmetic number, because the mean of its divisors is an integer number (11667750).

Almost surely, 2^85718519 is an apocalyptic number.

85718519 is a deficient number, since it is larger than the sum of its proper divisors (7623481).

85718519 is a wasteful number, since it uses less digits than its factorization.

85718519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155617.

The product of its digits is 100800, while the sum is 44.

The square root of 85718519 is about 9258.4296184612. The cubic root of 85718519 is about 440.9183968110.

The spelling of 85718519 in words is "eighty-five million, seven hundred eighteen thousand, five hundred nineteen".