86694220 has 72 divisors (see below), whose sum is σ = 197742384. Its totient is φ = 31908864.

The previous prime is 86694211. The next prime is 86694221. The reversal of 86694220 is 2249668.

It is a self number, because there is not a number n which added to its sum of digits gives 86694220.

It is not an unprimeable number, because it can be changed into a prime (86694221) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 306199 + ... + 306481.

It is an arithmetic number, because the mean of its divisors is an integer number (2746422).

Almost surely, 2^86694220 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 86694220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98871192).

86694220 is an abundant number, since it is smaller than the sum of its proper divisors (111048164).

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

86694220 is a wasteful number, since it uses less digits than its factorization.

86694220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379 (or 360 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 86694220 is about 9310.9730962988. The cubic root of 86694220 is about 442.5850241463.

The spelling of 86694220 in words is "eighty-six million, six hundred ninety-four thousand, two hundred twenty".