86721846 has 8 divisors (see below), whose sum is σ = 173443704. Its totient is φ = 28907280.

The previous prime is 86721839. The next prime is 86721851. The reversal of 86721846 is 64812768.

It is a sphenic number, since it is the product of 3 distinct primes.

86721846 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 86721798 and 86721807.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 7226815 + ... + 7226826.

It is an arithmetic number, because the mean of its divisors is an integer number (21680463).

Almost surely, 2^86721846 is an apocalyptic number.

86721846 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

86721846 is a wasteful number, since it uses less digits than its factorization.

86721846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14453646.

The product of its digits is 129024, while the sum is 42.

The square root of 86721846 is about 9312.4564965427. The cubic root of 86721846 is about 442.6320305687.

The spelling of 86721846 in words is "eighty-six million, seven hundred twenty-one thousand, eight hundred forty-six".