1066505656 has 16 divisors (see below), whose sum is σ = 2001090600. Its totient is φ = 532881504.

The previous prime is 1066505641. The next prime is 1066505669. The reversal of 1066505656 is 6565056601.

It is a super-2 number, since 2×1066505656² = 2274868628559980672, which contains 22 as substring.

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, 34015 + ... + 57358.

Almost surely, 2^1066505656 is an apocalyptic number.

It is an amenable number.

1066505656 is a deficient number, since it is larger than the sum of its proper divisors (934584944).

1066505656 is a wasteful number, since it uses less digits than its factorization.

1066505656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92838 (or 92834 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 40.

The square root of 1066505656 is about 32657.3981817291. The cubic root of 1066505656 is about 1021.6944972742.

The spelling of 1066505656 in words is "one billion, sixty-six million, five hundred five thousand, six hundred fifty-six".