223635397 has 2 divisors, whose sum is σ = 223635398. Its totient is φ = 223635396.

The previous prime is 223635359. The next prime is 223635403. The reversal of 223635397 is 793536322.

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., 154977601 + 68657796 = 12449^2 + 8286^2 .

It is a cyclic number.

It is not a de Polignac number, because 223635397 - 2¹⁵ = 223602629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223635337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111817698 + 111817699.

It is an arithmetic number, because the mean of its divisors is an integer number (111817699).

Almost surely, 2^223635397 is an apocalyptic number.

It is an amenable number.

223635397 is a deficient number, since it is larger than the sum of its proper divisors (1).

223635397 is an equidigital number, since it uses as much as digits as its factorization.

223635397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 204120, while the sum is 40.

The square root of 223635397 is about 14954.4440551964. Note that the first 3 decimals coincide. The cubic root of 223635397 is about 606.9881066691.

The spelling of 223635397 in words is "two hundred twenty-three million, six hundred thirty-five thousand, three hundred ninety-seven".