86729 has 2 divisors, whose sum is σ = 86730. Its totient is φ = 86728.

The previous prime is 86719. The next prime is 86743. The reversal of 86729 is 92768.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76729 + 10000 = 277^2 + 100^2 .

It is a cyclic number.

It is not a de Polignac number, because 86729 - 2¹² = 82633 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 86695 and 86704.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43364 + 43365.

It is an arithmetic number, because the mean of its divisors is an integer number (43365).

2⁸⁶⁷²⁹ is an apocalyptic number.

It is an amenable number.

86729 is a deficient number, since it is larger than the sum of its proper divisors (1).

86729 is an equidigital number, since it uses as much as digits as its factorization.

86729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 32.

The square root of 86729 is about 294.4978777513. The cubic root of 86729 is about 44.2644201675.

The spelling of 86729 in words is "eighty-six thousand, seven hundred twenty-nine".