1066646297 has 4 divisors (see below), whose sum is σ = 1068445620. Its totient is φ = 1064846976.

The previous prime is 1066646279. The next prime is 1066646327. The reversal of 1066646297 is 7926466601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7926466601 = 31 ⋅255692471.

It can be written as a sum of positive squares in 2 ways, for example, as 821911561 + 244734736 = 28669^2 + 15644^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1066646297 is a prime.

It is a super-2 number, since 2×1066646297² = 2275468645807624418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1066646227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 898772 + ... + 899957.

It is an arithmetic number, because the mean of its divisors is an integer number (267111405).

Almost surely, 2^1066646297 is an apocalyptic number.

It is an amenable number.

1066646297 is a deficient number, since it is larger than the sum of its proper divisors (1799323).

1066646297 is an equidigital number, since it uses as much as digits as its factorization.

1066646297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1799322.

The product of its (nonzero) digits is 653184, while the sum is 47.

The square root of 1066646297 is about 32659.5513900605. The cubic root of 1066646297 is about 1021.7394058718.

The spelling of 1066646297 in words is "one billion, sixty-six million, six hundred forty-six thousand, two hundred ninety-seven".