1066876649 has 2 divisors, whose sum is σ = 1066876650. Its totient is φ = 1066876648.

The previous prime is 1066876567. The next prime is 1066876663. The reversal of 1066876649 is 9466786601.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1008507049 + 58369600 = 31757^2 + 7640^2 .

It is a cyclic number.

It is not a de Polignac number, because 1066876649 - 2²⁴ = 1050099433 is a prime.

It is a super-2 number, since 2×1066876649² = 2276451568362938402, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1066876649.

It is not a weakly prime, because it can be changed into another prime (1066878649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 533438324 + 533438325.

It is an arithmetic number, because the mean of its divisors is an integer number (533438325).

Almost surely, 2^1066876649 is an apocalyptic number.

It is an amenable number.

1066876649 is a deficient number, since it is larger than the sum of its proper divisors (1).

1066876649 is an equidigital number, since it uses as much as digits as its factorization.

1066876649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2612736, while the sum is 53.

The square root of 1066876649 is about 32663.0777637381. The cubic root of 1066876649 is about 1021.8129518934.

The spelling of 1066876649 in words is "one billion, sixty-six million, eight hundred seventy-six thousand, six hundred forty-nine".