85662719 has 4 divisors (see below), whose sum is σ = 85681344. Its totient is φ = 85644096.

The previous prime is 85662713. The next prime is 85662743. The reversal of 85662719 is 91726658.

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 85662719 - 2⁸ = 85662463 is a prime.

It is a super-2 number, since 2×85662719² = 14676202852945922, 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 85662719.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85662713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3119 + ... + 13455.

It is an arithmetic number, because the mean of its divisors is an integer number (21420336).

Almost surely, 2^85662719 is an apocalyptic number.

85662719 is a deficient number, since it is larger than the sum of its proper divisors (18625).

85662719 is a wasteful number, since it uses less digits than its factorization.

85662719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18624.

The product of its digits is 181440, while the sum is 44.

The square root of 85662719 is about 9255.4156578730. The cubic root of 85662719 is about 440.8227014762.

The spelling of 85662719 in words is "eighty-five million, six hundred sixty-two thousand, seven hundred nineteen".