1066643041 has 2 divisors, whose sum is σ = 1066643042. Its totient is φ = 1066643040.

The previous prime is 1066643029. The next prime is 1066643063. The reversal of 1066643041 is 1403466601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 644956816 + 421686225 = 25396^2 + 20535^2 .

It is a cyclic number.

It is not a de Polignac number, because 1066643041 - 2²³ = 1058254433 is a prime.

It is a super-2 number, since 2×1066643041² = 2275454753827455362, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1066642994 and 1066643012.

It is not a weakly prime, because it can be changed into another prime (1066643021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 533321520 + 533321521.

It is an arithmetic number, because the mean of its divisors is an integer number (533321521).

Almost surely, 2^1066643041 is an apocalyptic number.

It is an amenable number.

1066643041 is a deficient number, since it is larger than the sum of its proper divisors (1).

1066643041 is an equidigital number, since it uses as much as digits as its factorization.

1066643041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 1066643041 is about 32659.5015424302. The cubic root of 1066643041 is about 1021.7383662310.

The spelling of 1066643041 in words is "one billion, sixty-six million, six hundred forty-three thousand, forty-one".