86706567728 has 40 divisors (see below), whose sum is σ = 186724026576. Its totient is φ = 38668448000.

The previous prime is 86706567719. The next prime is 86706567751. The reversal of 86706567728 is 82776560768.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4638323 + ... + 4656978.

Almost surely, 2^86706567728 is an apocalyptic number.

86706567728 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

86706567728 is an abundant number, since it is smaller than the sum of its proper divisors (100017458848).

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

86706567728 is a wasteful number, since it uses less digits than its factorization.

86706567728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9295373 (or 9295367 counting only the distinct ones).

The product of its (nonzero) digits is 47416320, while the sum is 62.

The spelling of 86706567728 in words is "eighty-six billion, seven hundred six million, five hundred sixty-seven thousand, seven hundred twenty-eight".