86622720 has 80 divisors (see below), whose sum is σ = 276946560. Its totient is φ = 23097344.

The previous prime is 86622707. The next prime is 86622737. The reversal of 86622720 is 2722668.

It is a tau number, because it is divible by the number of its divisors (80).

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, 2041 + ... + 13319.

It is an arithmetic number, because the mean of its divisors is an integer number (3461832).

Almost surely, 2^86622720 is an apocalyptic number.

86622720 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 86622720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138473280).

86622720 is an abundant number, since it is smaller than the sum of its proper divisors (190323840).

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

86622720 is a wasteful number, since it uses less digits than its factorization.

86622720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11305 (or 11289 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 86622720 is about 9307.1327485966. The cubic root of 86622720 is about 442.4633184825.

The spelling of 86622720 in words is "eighty-six million, six hundred twenty-two thousand, seven hundred twenty".