1076545661 has 2 divisors, whose sum is σ = 1076545662. Its totient is φ = 1076545660.

The previous prime is 1076545579. The next prime is 1076545667. The reversal of 1076545661 is 1665456701.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 660181636 + 416364025 = 25694^2 + 20405^2 .

It is a cyclic number.

It is not a de Polignac number, because 1076545661 - 2¹⁴ = 1076529277 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1076545667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 538272830 + 538272831.

It is an arithmetic number, because the mean of its divisors is an integer number (538272831).

Almost surely, 2^1076545661 is an apocalyptic number.

It is an amenable number.

1076545661 is a deficient number, since it is larger than the sum of its proper divisors (1).

1076545661 is an equidigital number, since it uses as much as digits as its factorization.

1076545661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 151200, while the sum is 41.

The square root of 1076545661 is about 32810.7552640899. The cubic root of 1076545661 is about 1024.8905410776.

The spelling of 1076545661 in words is "one billion, seventy-six million, five hundred forty-five thousand, six hundred sixty-one".