86481081 has 32 divisors (see below), whose sum is σ = 136581120. Its totient is φ = 53955792.

The previous prime is 86481077. The next prime is 86481089. The reversal of 86481081 is 18018468.

86481081 is a `hidden beast` number, since 8 + 648 + 1 + 0 + 8 + 1 = 666.

It is not a de Polignac number, because 86481081 - 2² = 86481077 is a prime.

It is a super-2 number, since 2×86481081² = 14957954741857122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (86481089) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27706 + ... + 30668.

It is an arithmetic number, because the mean of its divisors is an integer number (4268160).

Almost surely, 2^86481081 is an apocalyptic number.

It is an amenable number.

86481081 is a deficient number, since it is larger than the sum of its proper divisors (50100039).

86481081 is a wasteful number, since it uses less digits than its factorization.

86481081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3042 (or 3036 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 36.

The square root of 86481081 is about 9299.5204715082. The cubic root of 86481081 is about 442.2220259331. Note that the first 3 decimals are identical.

The spelling of 86481081 in words is "eighty-six million, four hundred eighty-one thousand, eighty-one".