86681747 has 2 divisors, whose sum is σ = 86681748. Its totient is φ = 86681746.

The previous prime is 86681729. The next prime is 86681801. The reversal of 86681747 is 74718668.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86681747 - 2¹⁸ = 86419603 is a prime.

It is not a weakly prime, because it can be changed into another prime (86681717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43340873 + 43340874.

It is an arithmetic number, because the mean of its divisors is an integer number (43340874).

Almost surely, 2^86681747 is an apocalyptic number.

86681747 is a deficient number, since it is larger than the sum of its proper divisors (1).

86681747 is an equidigital number, since it uses as much as digits as its factorization.

86681747 is an evil number, because the sum of its binary digits is even.

The product of its digits is 451584, while the sum is 47.

The square root of 86681747 is about 9310.3032711078. The cubic root of 86681747 is about 442.5637977109.

The spelling of 86681747 in words is "eighty-six million, six hundred eighty-one thousand, seven hundred forty-seven".