1066506111 has 12 divisors (see below), whose sum is σ = 1680555240. Its totient is φ = 646367280.

The previous prime is 1066506107. The next prime is 1066506131. The reversal of 1066506111 is 1116056601.

1066506111 is a `hidden beast` number, since 1 + 0 + 6 + 650 + 6 + 1 + 1 + 1 = 666.

It is not a de Polignac number, because 1066506111 - 2² = 1066506107 is a prime.

It is a super-2 number, since 2×1066506111² = 2274870569600688642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066506131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5386296 + ... + 5386493.

It is an arithmetic number, because the mean of its divisors is an integer number (140046270).

Almost surely, 2^1066506111 is an apocalyptic number.

1066506111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1066506111 is a deficient number, since it is larger than the sum of its proper divisors (614049129).

1066506111 is a wasteful number, since it uses less digits than its factorization.

1066506111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10772806 (or 10772803 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 1066506111 is about 32657.4051479906. The cubic root of 1066506111 is about 1021.6946425683.

The spelling of 1066506111 in words is "one billion, sixty-six million, five hundred six thousand, one hundred eleven".