1066641061 has 2 divisors, whose sum is σ = 1066641062. Its totient is φ = 1066641060.

The previous prime is 1066641053. The next prime is 1066641071. The reversal of 1066641061 is 1601466601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 900360036 + 166281025 = 30006^2 + 12895^2 .

It is a cyclic number.

It is not a de Polignac number, because 1066641061 - 2³ = 1066641053 is a prime.

It is a super-2 number, since 2×1066641061² = 2275446306022411442, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1066641001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 533320530 + 533320531.

It is an arithmetic number, because the mean of its divisors is an integer number (533320531).

Almost surely, 2^1066641061 is an apocalyptic number.

It is an amenable number.

1066641061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1066641061 is an equidigital number, since it uses as much as digits as its factorization.

1066641061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 1066641061 is about 32659.4712296449. The cubic root of 1066641061 is about 1021.7377340160.

The spelling of 1066641061 in words is "one billion, sixty-six million, six hundred forty-one thousand, sixty-one".