1066730643 has 12 divisors (see below), whose sum is σ = 1680909048. Its totient is φ = 646503360.

The previous prime is 1066730633. The next prime is 1066730653. The reversal of 1066730643 is 3460376601.

It is a happy number.

1066730643 is a `hidden beast` number, since 1 + 0 + 6 + 6 + 7 + 3 + 0 + 643 = 666.

1066730643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1066730633) and next prime (1066730653).

It is not a de Polignac number, because 1066730643 - 2¹⁰ = 1066729619 is a prime.

It is a super-2 number, since 2×1066730643² = 2275828529430386898, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1066730598 and 1066730607.

It is not an unprimeable number, because it can be changed into a prime (1066730633) 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, 5387430 + ... + 5387627.

It is an arithmetic number, because the mean of its divisors is an integer number (140075754).

Almost surely, 2^1066730643 is an apocalyptic number.

1066730643 is a deficient number, since it is larger than the sum of its proper divisors (614178405).

1066730643 is a wasteful number, since it uses less digits than its factorization.

1066730643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10775074 (or 10775071 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 36.

The square root of 1066730643 is about 32660.8426560002. The cubic root of 1066730643 is about 1021.7663368112.

The spelling of 1066730643 in words is "one billion, sixty-six million, seven hundred thirty thousand, six hundred forty-three".