85861854 has 48 divisors (see below), whose sum is σ = 201945744. Its totient is φ = 26208000.

The previous prime is 85861843. The next prime is 85861877. The reversal of 85861854 is 45816858.

85861854 is a `hidden beast` number, since 8 + 586 + 18 + 54 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29254 + ... + 32054.

It is an arithmetic number, because the mean of its divisors is an integer number (4207203).

Almost surely, 2^85861854 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85861854, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100972872).

85861854 is an abundant number, since it is smaller than the sum of its proper divisors (116083890).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85861854 is a wasteful number, since it uses less digits than its factorization.

85861854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2953 (or 2950 counting only the distinct ones).

The product of its digits is 307200, while the sum is 45.

The square root of 85861854 is about 9266.1671687921. The cubic root of 85861854 is about 441.1640218542.

It can be divided in two parts, 8586 and 1854, that added together give a triangular number (10440 = T₁₄₄).

The spelling of 85861854 in words is "eighty-five million, eight hundred sixty-one thousand, eight hundred fifty-four".