86543320 has 64 divisors (see below), whose sum is σ = 204042240. Its totient is φ = 32995200.

The previous prime is 86543293. The next prime is 86543321. The reversal of 86543320 is 2334568.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86543321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87549 + ... + 88531.

It is an arithmetic number, because the mean of its divisors is an integer number (3188160).

Almost surely, 2^86543320 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 86543320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102021120).

86543320 is an abundant number, since it is smaller than the sum of its proper divisors (117498920).

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

86543320 is a wasteful number, since it uses less digits than its factorization.

86543320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1096 (or 1092 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 86543320 is about 9302.8662249868. The cubic root of 86543320 is about 442.3280871135.

Adding to 86543320 its reverse (2334568), we get a palindrome (88877888).

The spelling of 86543320 in words is "eighty-six million, five hundred forty-three thousand, three hundred twenty".