1066265543 has 8 divisors (see below), whose sum is σ = 1238566560. Its totient is φ = 898958880.

The previous prime is 1066265527. The next prime is 1066265561. The reversal of 1066265543 is 3455626601.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1066265543 - 2⁴ = 1066265527 is a prime.

It is a super-2 number, since 2×1066265543² = 2273844416378169698, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1066265497 and 1066265506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066265573) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1248128 + ... + 1248981.

It is an arithmetic number, because the mean of its divisors is an integer number (154820820).

Almost surely, 2^1066265543 is an apocalyptic number.

1066265543 is a deficient number, since it is larger than the sum of its proper divisors (172301017).

1066265543 is an equidigital number, since it uses as much as digits as its factorization.

1066265543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2497177.

The product of its (nonzero) digits is 129600, while the sum is 38.

The square root of 1066265543 is about 32653.7217327520. The cubic root of 1066265543 is about 1021.6178167796.

The spelling of 1066265543 in words is "one billion, sixty-six million, two hundred sixty-five thousand, five hundred forty-three".