86684481 has 12 divisors (see below), whose sum is σ = 134842708. Its totient is φ = 53344224.

The previous prime is 86684473. The next prime is 86684483. The reversal of 86684481 is 18448668.

It can be written as a sum of positive squares in 2 ways, for example, as 15872256 + 70812225 = 3984^2 + 8415^2 .

It is not a de Polignac number, because 86684481 - 2³ = 86684473 is a prime.

It is a super-2 number, since 2×86684481² = 15028398492478722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (86684483) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 370330 + ... + 370563.

Almost surely, 2^86684481 is an apocalyptic number.

It is an amenable number.

86684481 is a deficient number, since it is larger than the sum of its proper divisors (48158227).

86684481 is a wasteful number, since it uses less digits than its factorization.

86684481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740912 (or 740909 counting only the distinct ones).

The product of its digits is 294912, while the sum is 45.

The square root of 86684481 is about 9310.4500965313. The cubic root of 86684481 is about 442.5684505810.

The spelling of 86684481 in words is "eighty-six million, six hundred eighty-four thousand, four hundred eighty-one".