1066993 has 6 divisors (see below), whose sum is σ = 1115954. Its totient is φ = 1020096.

The previous prime is 1066987. The next prime is 1066999. The reversal of 1066993 is 3996601.

It is an interprime number because it is at equal distance from previous prime (1066987) and next prime (1066999).

It can be written as a sum of positive squares in only one way, i.e., 1024144 + 42849 = 1012^2 + 207^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1066993 is a prime.

It is a super-2 number, since 2×1066993² = 2276948124098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1066999) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 480 + ... + 1537.

2^1066993 is an apocalyptic number.

It is an amenable number.

1066993 is a deficient number, since it is larger than the sum of its proper divisors (48961).

1066993 is an equidigital number, since it uses as much as digits as its factorization.

1066993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2063 (or 2040 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 34.

The square root of 1066993 is about 1032.9535323527. The cubic root of 1066993 is about 102.1850096030.

The spelling of 1066993 in words is "one million, sixty-six thousand, nine hundred ninety-three".