923641 has 2 divisors, whose sum is σ = 923642. Its totient is φ = 923640.

The previous prime is 923617. The next prime is 923653. The reversal of 923641 is 146329.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 739600 + 184041 = 860^2 + 429^2 .

It is a cyclic number.

It is not a de Polignac number, because 923641 - 2⁷ = 923513 is a prime.

It is a super-2 number, since 2×923641² = 1706225393762, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (923141) 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, 461820 + 461821.

It is an arithmetic number, because the mean of its divisors is an integer number (461821).

2⁹²³⁶⁴¹ is an apocalyptic number.

It is an amenable number.

923641 is a deficient number, since it is larger than the sum of its proper divisors (1).

923641 is an equidigital number, since it uses as much as digits as its factorization.

923641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 25.

The square root of 923641 is about 961.0624329356. The cubic root of 923641 is about 97.3870179336.

The spelling of 923641 in words is "nine hundred twenty-three thousand, six hundred forty-one".