86511081 has 8 divisors (see below), whose sum is σ = 115391104. Its totient is φ = 57652560.

The previous prime is 86511077. The next prime is 86511091. The reversal of 86511081 is 18011568.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 86511081 - 2² = 86511077 is a prime.

It is a super-3 number, since 3×86511081³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86511001) 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, 12711 + ... + 18291.

It is an arithmetic number, because the mean of its divisors is an integer number (14423888).

Almost surely, 2^86511081 is an apocalyptic number.

It is an amenable number.

86511081 is a deficient number, since it is larger than the sum of its proper divisors (28880023).

86511081 is a wasteful number, since it uses less digits than its factorization.

86511081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10751.

The product of its (nonzero) digits is 1920, while the sum is 30.

The square root of 86511081 is about 9301.1333180425. The cubic root of 86511081 is about 442.2731551391.

The spelling of 86511081 in words is "eighty-six million, five hundred eleven thousand, eighty-one".