86721360 has 160 divisors (see below), whose sum is σ = 296980992. Its totient is φ = 20759040.

The previous prime is 86721347. The next prime is 86721361. The reversal of 86721360 is 6312768.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86721361) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 282327 + ... + 282633.

Almost surely, 2^86721360 is an apocalyptic number.

86721360 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 86721360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148490496).

86721360 is an abundant number, since it is smaller than the sum of its proper divisors (210259632).

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

86721360 is a wasteful number, since it uses less digits than its factorization.

86721360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441 (or 435 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 86721360 is about 9312.4304024245. The cubic root of 86721360 is about 442.6312037122.

The spelling of 86721360 in words is "eighty-six million, seven hundred twenty-one thousand, three hundred sixty".