9570343661 has 2 divisors, whose sum is σ = 9570343662. Its totient is φ = 9570343660.

The previous prime is 9570343589. The next prime is 9570343667. The reversal of 9570343661 is 1663430759.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5625750025 + 3944593636 = 75005^2 + 62806^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9570343661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9570343667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4785171830 + 4785171831.

It is an arithmetic number, because the mean of its divisors is an integer number (4785171831).

Almost surely, 2^9570343661 is an apocalyptic number.

It is an amenable number.

9570343661 is a deficient number, since it is larger than the sum of its proper divisors (1).

9570343661 is an equidigital number, since it uses as much as digits as its factorization.

9570343661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 408240, while the sum is 44.

The square root of 9570343661 is about 97828.1332797473. The cubic root of 9570343661 is about 2123.1263696017.

The spelling of 9570343661 in words is "nine billion, five hundred seventy million, three hundred forty-three thousand, six hundred sixty-one".