86571212 has 48 divisors (see below), whose sum is σ = 190831872. Its totient is φ = 33445440.

The previous prime is 86571203. The next prime is 86571253. The reversal of 86571212 is 21217568.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 12887 + ... + 18417.

It is an arithmetic number, because the mean of its divisors is an integer number (3975664).

Almost surely, 2^86571212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 86571212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95415936).

86571212 is an abundant number, since it is smaller than the sum of its proper divisors (104260660).

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

86571212 is a wasteful number, since it uses less digits than its factorization.

86571212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5598 (or 5596 counting only the distinct ones).

The product of its digits is 6720, while the sum is 32.

The square root of 86571212 is about 9304.3652120927. The cubic root of 86571212 is about 442.3756012364.

The spelling of 86571212 in words is "eighty-six million, five hundred seventy-one thousand, two hundred twelve".