1066263566 has 8 divisors (see below), whose sum is σ = 1599707064. Its totient is φ = 533027880.

The previous prime is 1066263563. The next prime is 1066263577. The reversal of 1066263566 is 6653626601.

It is a happy number.

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

It is a super-2 number, since 2×1066263566² = 2273835984358072712, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066263563) by changing a digit.

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, 38420 + ... + 60071.

It is an arithmetic number, because the mean of its divisors is an integer number (199963383).

Almost surely, 2^1066263566 is an apocalyptic number.

1066263566 is a deficient number, since it is larger than the sum of its proper divisors (533443498).

1066263566 is an equidigital number, since it uses as much as digits as its factorization.

1066263566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103906.

The product of its (nonzero) digits is 233280, while the sum is 41.

The square root of 1066263566 is about 32653.6914605378. The cubic root of 1066263566 is about 1021.6171853735.

The spelling of 1066263566 in words is "one billion, sixty-six million, two hundred sixty-three thousand, five hundred sixty-six".