86068991 has 2 divisors, whose sum is σ = 86068992. Its totient is φ = 86068990.

The previous prime is 86068951. The next prime is 86069003. The reversal of 86068991 is 19986068.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86068991 - 2¹⁴ = 86052607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86068951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43034495 + 43034496.

It is an arithmetic number, because the mean of its divisors is an integer number (43034496).

Almost surely, 2^86068991 is an apocalyptic number.

86068991 is a deficient number, since it is larger than the sum of its proper divisors (1).

86068991 is an equidigital number, since it uses as much as digits as its factorization.

86068991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 186624, while the sum is 47.

The square root of 86068991 is about 9277.3374952084. The cubic root of 86068991 is about 441.5184982675.

The spelling of 86068991 in words is "eighty-six million, sixty-eight thousand, nine hundred ninety-one".