86621100 has 72 divisors (see below), whose sum is σ = 252223440. Its totient is φ = 22951680.

The previous prime is 86621089. The next prime is 86621113. The reversal of 86621100 is 112668.

It is a nialpdrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51066 + ... + 52734.

Almost surely, 2^86621100 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 86621100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126111720).

86621100 is an abundant number, since it is smaller than the sum of its proper divisors (165602340).

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

86621100 is a wasteful number, since it uses less digits than its factorization.

86621100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1859 (or 1852 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 86621100 is about 9307.0457181643. The cubic root of 86621100 is about 442.4605601798.

Adding to 86621100 its reverse (112668), we get a palindrome (86733768).

The spelling of 86621100 in words is "eighty-six million, six hundred twenty-one thousand, one hundred".