1066539 has 4 divisors (see below), whose sum is σ = 1422056. Its totient is φ = 711024.

The previous prime is 1066531. The next prime is 1066553. The reversal of 1066539 is 9356601.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9356601 = 3 ⋅3118867.

It is not a de Polignac number, because 1066539 - 2³ = 1066531 is a prime.

It is a super-2 number, since 2×1066539² = 2275010877042, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1066531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177754 + ... + 177759.

It is an arithmetic number, because the mean of its divisors is an integer number (355514).

2^1066539 is an apocalyptic number.

1066539 is a deficient number, since it is larger than the sum of its proper divisors (355517).

1066539 is an equidigital number, since it uses as much as digits as its factorization.

1066539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355516.

The product of its (nonzero) digits is 4860, while the sum is 30.

The square root of 1066539 is about 1032.7337507799. The cubic root of 1066539 is about 102.1705144827.

The spelling of 1066539 in words is "one million, sixty-six thousand, five hundred thirty-nine".