86781752 has 8 divisors (see below), whose sum is σ = 162715800. Its totient is φ = 43390872.

The previous prime is 86781749. The next prime is 86781757. The reversal of 86781752 is 25718768.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86781757) 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 as a sum of consecutive naturals, namely, 5423852 + ... + 5423867.

It is an arithmetic number, because the mean of its divisors is an integer number (20339475).

Almost surely, 2^86781752 is an apocalyptic number.

It is an amenable number.

86781752 is a deficient number, since it is larger than the sum of its proper divisors (75934048).

86781752 is a wasteful number, since it uses less digits than its factorization.

86781752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10847725 (or 10847721 counting only the distinct ones).

The product of its digits is 188160, while the sum is 44.

The square root of 86781752 is about 9315.6723858238. The cubic root of 86781752 is about 442.7339280425.

The spelling of 86781752 in words is "eighty-six million, seven hundred eighty-one thousand, seven hundred fifty-two".