1086689 has 2 divisors, whose sum is σ = 1086690. Its totient is φ = 1086688.

The previous prime is 1086677. The next prime is 1086703. The reversal of 1086689 is 9866801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1067089 + 19600 = 1033^2 + 140^2 .

It is a cyclic number.

It is not a de Polignac number, because 1086689 - 2⁸ = 1086433 is a prime.

It is not a weakly prime, because it can be changed into another prime (1086619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 543344 + 543345.

It is an arithmetic number, because the mean of its divisors is an integer number (543345).

2^1086689 is an apocalyptic number.

It is an amenable number.

1086689 is a deficient number, since it is larger than the sum of its proper divisors (1).

1086689 is an equidigital number, since it uses as much as digits as its factorization.

1086689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 1086689 is about 1042.4437634712. The cubic root of 1086689 is about 102.8099363588.

The spelling of 1086689 in words is "one million, eighty-six thousand, six hundred eighty-nine".