923535661 has 2 divisors, whose sum is σ = 923535662. Its totient is φ = 923535660.

The previous prime is 923535611. The next prime is 923535671. The reversal of 923535661 is 166535329.

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., 596287561 + 327248100 = 24419^2 + 18090^2 .

It is a cyclic number.

It is not a de Polignac number, because 923535661 - 2¹⁹ = 923011373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (923535611) 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, 461767830 + 461767831.

It is an arithmetic number, because the mean of its divisors is an integer number (461767831).

Almost surely, 2^923535661 is an apocalyptic number.

It is an amenable number.

923535661 is a deficient number, since it is larger than the sum of its proper divisors (1).

923535661 is an equidigital number, since it uses as much as digits as its factorization.

923535661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145800, while the sum is 40.

The square root of 923535661 is about 30389.7295315375. The cubic root of 923535661 is about 973.8331554238.

The spelling of 923535661 in words is "nine hundred twenty-three million, five hundred thirty-five thousand, six hundred sixty-one".