85671719 has 8 divisors (see below), whose sum is σ = 98031648. Its totient is φ = 73342080.

The previous prime is 85671709. The next prime is 85671739. The reversal of 85671719 is 91717658.

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-85671719 is a prime.

It is a super-2 number, since 2×85671719² = 14679286872829922, 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 85671719.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85671709) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1142 + ... + 13139.

It is an arithmetic number, because the mean of its divisors is an integer number (12253956).

Almost surely, 2^85671719 is an apocalyptic number.

85671719 is a deficient number, since it is larger than the sum of its proper divisors (12359929).

85671719 is a wasteful number, since it uses less digits than its factorization.

85671719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15145.

The product of its digits is 105840, while the sum is 44.

The square root of 85671719 is about 9255.9018469299. The cubic root of 85671719 is about 440.8381390179.

The spelling of 85671719 in words is "eighty-five million, six hundred seventy-one thousand, seven hundred nineteen".