1066377197 has 2 divisors, whose sum is σ = 1066377198. Its totient is φ = 1066377196.

The previous prime is 1066377107. The next prime is 1066377209. The reversal of 1066377197 is 7917736601.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 644855236 + 421521961 = 25394^2 + 20531^2 .

It is a cyclic number.

It is not a de Polignac number, because 1066377197 - 2²² = 1062182893 is a prime.

It is a super-2 number, since 2×1066377197² = 2274320652563153618, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1066377107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 533188598 + 533188599.

It is an arithmetic number, because the mean of its divisors is an integer number (533188599).

Almost surely, 2^1066377197 is an apocalyptic number.

It is an amenable number.

1066377197 is a deficient number, since it is larger than the sum of its proper divisors (1).

1066377197 is an equidigital number, since it uses as much as digits as its factorization.

1066377197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 333396, while the sum is 47.

The square root of 1066377197 is about 32655.4313552891. The cubic root of 1066377197 is about 1021.6534751060.

The spelling of 1066377197 in words is "one billion, sixty-six million, three hundred seventy-seven thousand, one hundred ninety-seven".