86771256 has 128 divisors (see below), whose sum is σ = 258128640. Its totient is φ = 23961600.

The previous prime is 86771239. The next prime is 86771273. The reversal of 86771256 is 65217768.

It is an interprime number because it is at equal distance from previous prime (86771239) and next prime (86771273).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 449496 + ... + 449688.

It is an arithmetic number, because the mean of its divisors is an integer number (2016630).

Almost surely, 2^86771256 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 86771256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129064320).

86771256 is an abundant number, since it is smaller than the sum of its proper divisors (171357384).

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

86771256 is a wasteful number, since it uses less digits than its factorization.

86771256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357 (or 353 counting only the distinct ones).

The product of its digits is 141120, while the sum is 42.

The square root of 86771256 is about 9315.1090170754. The cubic root of 86771256 is about 442.7160781967.

It can be divided in two parts, 867712 and 56, that added together give a palindrome (867768).

The spelling of 86771256 in words is "eighty-six million, seven hundred seventy-one thousand, two hundred fifty-six".