1087729 has 2 divisors, whose sum is σ = 1087730. Its totient is φ = 1087728.

The previous prime is 1087717. The next prime is 1087741. The reversal of 1087729 is 9277801.

It is a balanced prime because it is at equal distance from previous prime (1087717) and next prime (1087741).

It can be written as a sum of positive squares in only one way, i.e., 810000 + 277729 = 900^2 + 527^2 .

It is a cyclic number.

It is not a de Polignac number, because 1087729 - 2¹¹ = 1085681 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1087694 and 1087703.

It is not a weakly prime, because it can be changed into another prime (1087789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 543864 + 543865.

It is an arithmetic number, because the mean of its divisors is an integer number (543865).

2^1087729 is an apocalyptic number.

It is an amenable number.

1087729 is a deficient number, since it is larger than the sum of its proper divisors (1).

1087729 is an equidigital number, since it uses as much as digits as its factorization.

1087729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7056, while the sum is 34.

The square root of 1087729 is about 1042.9424720472. The cubic root of 1087729 is about 102.8427234894.

The spelling of 1087729 in words is "one million, eighty-seven thousand, seven hundred twenty-nine".