9661693 has 2 divisors, whose sum is σ = 9661694. Its totient is φ = 9661692.

The previous prime is 9661681. The next prime is 9661703. The reversal of 9661693 is 3961669.

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., 5890329 + 3771364 = 2427^2 + 1942^2 .

It is an emirp because it is prime and its reverse (3961669) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9661693 - 2¹⁷ = 9530621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9662693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4830846 + 4830847.

It is an arithmetic number, because the mean of its divisors is an integer number (4830847).

Almost surely, 2^9661693 is an apocalyptic number.

It is an amenable number.

9661693 is a deficient number, since it is larger than the sum of its proper divisors (1).

9661693 is an equidigital number, since it uses as much as digits as its factorization.

9661693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52488, while the sum is 40.

The square root of 9661693 is about 3108.3263985624. The cubic root of 9661693 is about 212.9860100872.

The spelling of 9661693 in words is "nine million, six hundred sixty-one thousand, six hundred ninety-three".