1123566689 has 8 divisors (see below), whose sum is σ = 1292581248. Its totient is φ = 956678400.

The previous prime is 1123566671. The next prime is 1123566701. The reversal of 1123566689 is 9866653211.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1123566689 is a prime.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (1123566289) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 530432 + ... + 532545.

It is an arithmetic number, because the mean of its divisors is an integer number (161572656).

Almost surely, 2^1123566689 is an apocalyptic number.

It is an amenable number.

1123566689 is a deficient number, since it is larger than the sum of its proper divisors (169014559).

1123566689 is a wasteful number, since it uses less digits than its factorization.

1123566689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1063135.

The product of its digits is 466560, while the sum is 47.

The square root of 1123566689 is about 33519.6463137665. The cubic root of 1123566689 is about 1039.6000338845.

The spelling of 1123566689 in words is "one billion, one hundred twenty-three million, five hundred sixty-six thousand, six hundred eighty-nine".