1166760521 has 2 divisors, whose sum is σ = 1166760522. Its totient is φ = 1166760520.

The previous prime is 1166760503. The next prime is 1166760527. The reversal of 1166760521 is 1250676611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 783384121 + 383376400 = 27989^2 + 19580^2 .

It is an emirp because it is prime and its reverse (1250676611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1166760521 - 2¹⁰ = 1166759497 is a prime.

It is a super-2 number, since 2×1166760521² = 2722660226728382882, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1166760527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 583380260 + 583380261.

It is an arithmetic number, because the mean of its divisors is an integer number (583380261).

Almost surely, 2^1166760521 is an apocalyptic number.

It is an amenable number.

1166760521 is a deficient number, since it is larger than the sum of its proper divisors (1).

1166760521 is an equidigital number, since it uses as much as digits as its factorization.

1166760521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 1166760521 is about 34157.8764123299. The cubic root of 1166760521 is about 1052.7548282676.

The spelling of 1166760521 in words is "one billion, one hundred sixty-six million, seven hundred sixty thousand, five hundred twenty-one".