1082647661 has 2 divisors, whose sum is σ = 1082647662. Its totient is φ = 1082647660.

The previous prime is 1082647637. The next prime is 1082647711. The reversal of 1082647661 is 1667462801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 791296900 + 291350761 = 28130^2 + 17069^2 .

It is an emirp because it is prime and its reverse (1667462801) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1082647661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1082647061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 541323830 + 541323831.

It is an arithmetic number, because the mean of its divisors is an integer number (541323831).

Almost surely, 2^1082647661 is an apocalyptic number.

It is an amenable number.

1082647661 is a deficient number, since it is larger than the sum of its proper divisors (1).

1082647661 is an equidigital number, since it uses as much as digits as its factorization.

1082647661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 1082647661 is about 32903.6116710613. The cubic root of 1082647661 is about 1026.8232979927.

The spelling of 1082647661 in words is "one billion, eighty-two million, six hundred forty-seven thousand, six hundred sixty-one".