1065987 has 16 divisors (see below), whose sum is σ = 1701280. Its totient is φ = 655776.

The previous prime is 1065979. The next prime is 1066001. The reversal of 1065987 is 7895601.

It is not a de Polignac number, because 1065987 - 2³ = 1065979 is a prime.

It is a super-2 number, since 2×1065987² = 2272656568338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1065937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1168 + ... + 1869.

It is an arithmetic number, because the mean of its divisors is an integer number (106330).

2^1065987 is an apocalyptic number.

1065987 is a deficient number, since it is larger than the sum of its proper divisors (635293).

1065987 is a wasteful number, since it uses less digits than its factorization.

1065987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3059 (or 3053 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 1065987 is about 1032.4664643464. The cubic root of 1065987 is about 102.1528849175.

The spelling of 1065987 in words is "one million, sixty-five thousand, nine hundred eighty-seven".