9965573 has 2 divisors, whose sum is σ = 9965574. Its totient is φ = 9965572.

The previous prime is 9965533. The next prime is 9965581. The reversal of 9965573 is 3755699.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5373124 + 4592449 = 2318^2 + 2143^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9965573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9965503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4982786 + 4982787.

It is an arithmetic number, because the mean of its divisors is an integer number (4982787).

Almost surely, 2^9965573 is an apocalyptic number.

It is an amenable number.

9965573 is a deficient number, since it is larger than the sum of its proper divisors (1).

9965573 is an equidigital number, since it uses as much as digits as its factorization.

9965573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 255150, while the sum is 44.

The square root of 9965573 is about 3156.8295804493. The cubic root of 9965573 is about 215.1959489962.

The spelling of 9965573 in words is "nine million, nine hundred sixty-five thousand, five hundred seventy-three".