86779756 has 24 divisors (see below), whose sum is σ = 173859840. Its totient is φ = 37126992.

The previous prime is 86779753. The next prime is 86779769. The reversal of 86779756 is 65797768.

It is a junction number, because it is equal to n+sod(n) for n = 86779697 and 86779706.

It is not an unprimeable number, because it can be changed into a prime (86779753) 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 in 7 ways as a sum of consecutive naturals, for example, 16101 + ... + 20803.

It is an arithmetic number, because the mean of its divisors is an integer number (7244160).

Almost surely, 2^86779756 is an apocalyptic number.

It is an amenable number.

86779756 is an abundant number, since it is smaller than the sum of its proper divisors (87080084).

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

86779756 is a wasteful number, since it uses less digits than its factorization.

86779756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5373 (or 5371 counting only the distinct ones).

The product of its digits is 4445280, while the sum is 55.

The square root of 86779756 is about 9315.5652539178. The cubic root of 86779756 is about 442.7305336895.

The spelling of 86779756 in words is "eighty-six million, seven hundred seventy-nine thousand, seven hundred fifty-six".