86521316 has 24 divisors (see below), whose sum is σ = 177265536. Its totient is φ = 36175680.

The previous prime is 86521301. The next prime is 86521319. The reversal of 86521316 is 61312568.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (86521319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36536 + ... + 38831.

It is an arithmetic number, because the mean of its divisors is an integer number (7386064).

Almost surely, 2^86521316 is an apocalyptic number.

It is an amenable number.

86521316 is an abundant number, since it is smaller than the sum of its proper divisors (90744220).

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

86521316 is a wasteful number, since it uses less digits than its factorization.

86521316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75419 (or 75417 counting only the distinct ones).

The product of its digits is 8640, while the sum is 32.

The square root of 86521316 is about 9301.6835035385. The cubic root of 86521316 is about 442.2905960157.

The spelling of 86521316 in words is "eighty-six million, five hundred twenty-one thousand, three hundred sixteen".