86671782 has 48 divisors (see below), whose sum is σ = 196297920. Its totient is φ = 28660392.

The previous prime is 86671777. The next prime is 86671829. The reversal of 86671782 is 28717668.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 66913 + ... + 68195.

It is an arithmetic number, because the mean of its divisors is an integer number (4089540).

Almost surely, 2^86671782 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 86671782, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98148960).

86671782 is an abundant number, since it is smaller than the sum of its proper divisors (109626138).

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

86671782 is a wasteful number, since it uses less digits than its factorization.

86671782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1439 (or 1427 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 86671782 is about 9309.7680959302. The cubic root of 86671782 is about 442.5468379034.

The spelling of 86671782 in words is "eighty-six million, six hundred seventy-one thousand, seven hundred eighty-two".