85878859 has 8 divisors (see below), whose sum is σ = 94739760. Its totient is φ = 77193600.

The previous prime is 85878857. The next prime is 85878913. The reversal of 85878859 is 95887858.

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

It is not a de Polignac number, because 85878859 - 2¹ = 85878857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85878851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42882 + ... + 44839.

It is an arithmetic number, because the mean of its divisors is an integer number (11842470).

Almost surely, 2^85878859 is an apocalyptic number.

85878859 is a gapful number since it is divisible by the number (89) formed by its first and last digit.

85878859 is a deficient number, since it is larger than the sum of its proper divisors (8860901).

85878859 is a wasteful number, since it uses less digits than its factorization.

85878859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87821.

The product of its digits is 6451200, while the sum is 58.

The square root of 85878859 is about 9267.0847087960. The cubic root of 85878859 is about 441.1931442124.

The spelling of 85878859 in words is "eighty-five million, eight hundred seventy-eight thousand, eight hundred fifty-nine".