1066870643 has 2 divisors, whose sum is σ = 1066870644. Its totient is φ = 1066870642.

The previous prime is 1066870631. The next prime is 1066870657. The reversal of 1066870643 is 3460786601.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1066870643 - 2¹⁴ = 1066854259 is a prime.

It is a super-2 number, since 2×1066870643² = 2276425937790466898, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1066870643.

It is not a weakly prime, because it can be changed into another prime (1066870043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 533435321 + 533435322.

It is an arithmetic number, because the mean of its divisors is an integer number (533435322).

Almost surely, 2^1066870643 is an apocalyptic number.

1066870643 is a deficient number, since it is larger than the sum of its proper divisors (1).

1066870643 is an equidigital number, since it uses as much as digits as its factorization.

1066870643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 1066870643 is about 32662.9858249365. The cubic root of 1066870643 is about 1021.8110344521.

The spelling of 1066870643 in words is "one billion, sixty-six million, eight hundred seventy thousand, six hundred forty-three".