1026666061 has 2 divisors, whose sum is σ = 1026666062. Its totient is φ = 1026666060.

The previous prime is 1026666059. The next prime is 1026666077. The reversal of 1026666061 is 1606666201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 726302500 + 300363561 = 26950^2 + 17331^2 .

It is a cyclic number.

It is not a de Polignac number, because 1026666061 - 2¹ = 1026666059 is a prime.

It is a super-4 number, since 4×1026666061⁴ (a number of 37 digits) contains 4444 as substring.

Together with 1026666059, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1026666001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 513333030 + 513333031.

It is an arithmetic number, because the mean of its divisors is an integer number (513333031).

Almost surely, 2^1026666061 is an apocalyptic number.

It is an amenable number.

1026666061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1026666061 is an equidigital number, since it uses as much as digits as its factorization.

1026666061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 1026666061 is about 32041.6301239497. The cubic root of 1026666061 is about 1008.8108283076.

The spelling of 1026666061 in words is "one billion, twenty-six million, six hundred sixty-six thousand, sixty-one".