11690321 has 2 divisors, whose sum is σ = 11690322. Its totient is φ = 11690320.

The previous prime is 11690257. The next prime is 11690333. The reversal of 11690321 is 12309611.

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., 11560000 + 130321 = 3400^2 + 361^2 .

It is a cyclic number.

It is not a de Polignac number, because 11690321 - 2⁶ = 11690257 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11690521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5845160 + 5845161.

It is an arithmetic number, because the mean of its divisors is an integer number (5845161).

Almost surely, 2^11690321 is an apocalyptic number.

It is an amenable number.

11690321 is a deficient number, since it is larger than the sum of its proper divisors (1).

11690321 is an equidigital number, since it uses as much as digits as its factorization.

11690321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 11690321 is about 3419.1111418028. Note that the first 4 decimals coincide. The cubic root of 11690321 is about 226.9562492096.

Adding to 11690321 its reverse (12309611), we get a palindrome (23999932).

The spelling of 11690321 in words is "eleven million, six hundred ninety thousand, three hundred twenty-one".