223456689 has 6 divisors (see below), whose sum is σ = 322770786. Its totient is φ = 148971120.

The previous prime is 223456643. The next prime is 223456729. The reversal of 223456689 is 986654322.

223456689 is a `hidden beast` number, since 2 + 2 + 3 + 4 + 566 + 89 = 666.

It can be written as a sum of positive squares in only one way, i.e., 171400464 + 52056225 = 13092^2 + 7215^2 .

It is not a de Polignac number, because 223456689 - 2⁷ = 223456561 is a prime.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (223456609) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12414252 + ... + 12414269.

It is an arithmetic number, because the mean of its divisors is an integer number (53795131).

Almost surely, 2^223456689 is an apocalyptic number.

It is an amenable number.

223456689 is a deficient number, since it is larger than the sum of its proper divisors (99314097).

223456689 is a wasteful number, since it uses less digits than its factorization.

223456689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24828527 (or 24828524 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The square root of 223456689 is about 14948.4677810135. The cubic root of 223456689 is about 606.8263813210.

The spelling of 223456689 in words is "two hundred twenty-three million, four hundred fifty-six thousand, six hundred eighty-nine".