86681801 has 2 divisors, whose sum is σ = 86681802. Its totient is φ = 86681800.

The previous prime is 86681747. The next prime is 86681807. The reversal of 86681801 is 10818668.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68873401 + 17808400 = 8299^2 + 4220^2 .

It is a cyclic number.

It is not a de Polignac number, because 86681801 - 2¹⁰ = 86680777 is a prime.

It is not a weakly prime, because it can be changed into another prime (86681807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43340900 + 43340901.

It is an arithmetic number, because the mean of its divisors is an integer number (43340901).

Almost surely, 2^86681801 is an apocalyptic number.

It is an amenable number.

86681801 is a deficient number, since it is larger than the sum of its proper divisors (1).

86681801 is an equidigital number, since it uses as much as digits as its factorization.

86681801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18432, while the sum is 38.

The square root of 86681801 is about 9310.3061711203. The cubic root of 86681801 is about 442.5638896120.

The spelling of 86681801 in words is "eighty-six million, six hundred eighty-one thousand, eight hundred one".