86701729 has 2 divisors, whose sum is σ = 86701730. Its totient is φ = 86701728.

The previous prime is 86701711. The next prime is 86701763. The reversal of 86701729 is 92710768.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86397025 + 304704 = 9295^2 + 552^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86701729 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 86701691 and 86701700.

It is not a weakly prime, because it can be changed into another prime (86701709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43350864 + 43350865.

It is an arithmetic number, because the mean of its divisors is an integer number (43350865).

Almost surely, 2^86701729 is an apocalyptic number.

It is an amenable number.

86701729 is a deficient number, since it is larger than the sum of its proper divisors (1).

86701729 is an equidigital number, since it uses as much as digits as its factorization.

86701729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 86701729 is about 9311.3763214683. The cubic root of 86701729 is about 442.5978019109.

The spelling of 86701729 in words is "eighty-six million, seven hundred one thousand, seven hundred twenty-nine".