1066707641 has 2 divisors, whose sum is σ = 1066707642. Its totient is φ = 1066707640.

The previous prime is 1066707611. The next prime is 1066707647. The reversal of 1066707641 is 1467076601.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1066675600 + 32041 = 32660^2 + 179^2 .

It is an emirp because it is prime and its reverse (1467076601) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1066707641 - 2¹⁰ = 1066706617 is a prime.

It is a super-2 number, since 2×1066707641² = 2275730382735569762, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1066707595 and 1066707604.

It is not a weakly prime, because it can be changed into another prime (1066707647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 533353820 + 533353821.

It is an arithmetic number, because the mean of its divisors is an integer number (533353821).

Almost surely, 2^1066707641 is an apocalyptic number.

It is an amenable number.

1066707641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1066707641 is an equidigital number, since it uses as much as digits as its factorization.

1066707641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 1066707641 is about 32660.4905198927. The cubic root of 1066707641 is about 1021.7589926148.

The spelling of 1066707641 in words is "one billion, sixty-six million, seven hundred seven thousand, six hundred forty-one".