85878759 has 4 divisors (see below), whose sum is σ = 114505016. Its totient is φ = 57252504.

The previous prime is 85878731. The next prime is 85878761. The reversal of 85878759 is 95787858.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 85878759 - 2²⁰ = 84830183 is a prime.

It is a super-2 number, since 2×85878759² = 14750322494760162, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85878699 and 85878708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85878719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14313124 + ... + 14313129.

It is an arithmetic number, because the mean of its divisors is an integer number (28626254).

Almost surely, 2^85878759 is an apocalyptic number.

85878759 is a deficient number, since it is larger than the sum of its proper divisors (28626257).

85878759 is a wasteful number, since it uses less digits than its factorization.

85878759 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28626256.

The product of its digits is 5644800, while the sum is 57.

The square root of 85878759 is about 9267.0793133543. The cubic root of 85878759 is about 441.1929729660.

Subtracting 85878759 from its reverse (95787858), we obtain a palindrome (9909099).

The spelling of 85878759 in words is "eighty-five million, eight hundred seventy-eight thousand, seven hundred fifty-nine".