86993 has 2 divisors, whose sum is σ = 86994. Its totient is φ = 86992.

The previous prime is 86981. The next prime is 87011. The reversal of 86993 is 39968.

86993 is nontrivially palindromic in base 11.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82369 + 4624 = 287^2 + 68^2 .

It is a cyclic number.

It is not a de Polignac number, because 86993 - 2⁶ = 86929 is a prime.

It is a plaindrome in base 14.

It is not a weakly prime, because it can be changed into another prime (86923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43496 + 43497.

It is an arithmetic number, because the mean of its divisors is an integer number (43497).

2⁸⁶⁹⁹³ is an apocalyptic number.

It is an amenable number.

86993 is a deficient number, since it is larger than the sum of its proper divisors (1).

86993 is an equidigital number, since it uses as much as digits as its factorization.

86993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 35.

The square root of 86993 is about 294.9457577250. The cubic root of 86993 is about 44.3092877815.

The spelling of 86993 in words is "eighty-six thousand, nine hundred ninety-three".