86644668 has 96 divisors (see below), whose sum is σ = 228388608. Its totient is φ = 25344000.

The previous prime is 86644651. The next prime is 86644673.

86644668 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 857818 + ... + 857918.

It is an arithmetic number, because the mean of its divisors is an integer number (2379048).

Almost surely, 2^86644668 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 86644668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114194304).

86644668 is an abundant number, since it is smaller than the sum of its proper divisors (141743940).

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

86644668 is a wasteful number, since it uses less digits than its factorization.

86644668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283 (or 281 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 48.

The square root of 86644668 is about 9308.3117695960. The cubic root of 86644668 is about 442.5006849873.

The spelling of 86644668 in words is "eighty-six million, six hundred forty-four thousand, six hundred sixty-eight".