86472081 has 12 divisors (see below), whose sum is σ = 132251652. Its totient is φ = 54256896.

The previous prime is 86472073. The next prime is 86472083. The reversal of 86472081 is 18027468.

86472081 is a `hidden beast` number, since 8 + 647 + 2 + 0 + 8 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 44675856 + 41796225 = 6684^2 + 6465^2 .

It is not a de Polignac number, because 86472081 - 2³ = 86472073 is a prime.

It is a super-2 number, since 2×86472081² = 14954841584941122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (86472083) 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, 282436 + ... + 282741.

It is an arithmetic number, because the mean of its divisors is an integer number (11020971).

Almost surely, 2^86472081 is an apocalyptic number.

It is an amenable number.

86472081 is a deficient number, since it is larger than the sum of its proper divisors (45779571).

86472081 is a wasteful number, since it uses less digits than its factorization.

86472081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565200 (or 565197 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 86472081 is about 9299.0365629994. The cubic root of 86472081 is about 442.2066848656.

The spelling of 86472081 in words is "eighty-six million, four hundred seventy-two thousand, eighty-one".