1066424165 has 4 divisors (see below), whose sum is σ = 1279709004. Its totient is φ = 853139328.

The previous prime is 1066424159. The next prime is 1066424171. The reversal of 1066424165 is 5614246601.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1066424159) and next prime (1066424171).

It can be written as a sum of positive squares in 2 ways, for example, as 805310884 + 261113281 = 28378^2 + 16159^2 .

It is a cyclic number.

It is not a de Polignac number, because 1066424165 - 2²⁰ = 1065375589 is a prime.

It is a super-2 number, since 2×1066424165² = 2274520999391894450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106642412 + ... + 106642421.

It is an arithmetic number, because the mean of its divisors is an integer number (319927251).

Almost surely, 2^1066424165 is an apocalyptic number.

It is an amenable number.

1066424165 is a deficient number, since it is larger than the sum of its proper divisors (213284839).

1066424165 is an equidigital number, since it uses as much as digits as its factorization.

1066424165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213284838.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 1066424165 is about 32656.1504926714. The cubic root of 1066424165 is about 1021.6684742752.

The spelling of 1066424165 in words is "one billion, sixty-six million, four hundred twenty-four thousand, one hundred sixty-five".