1223445685 has 32 divisors (see below), whose sum is σ = 1832792832. Its totient is φ = 761671680.

The previous prime is 1223445683. The next prime is 1223445703. The reversal of 1223445685 is 5865443221.

It is not a de Polignac number, because 1223445685 - 2¹ = 1223445683 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223445683) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 388437 + ... + 391573.

It is an arithmetic number, because the mean of its divisors is an integer number (57274776).

Almost surely, 2^1223445685 is an apocalyptic number.

It is an amenable number.

1223445685 is a deficient number, since it is larger than the sum of its proper divisors (609347147).

1223445685 is a wasteful number, since it uses less digits than its factorization.

1223445685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4173.

The product of its digits is 230400, while the sum is 40.

The square root of 1223445685 is about 34977.7884521020. The cubic root of 1223445685 is about 1069.5347454678.

The spelling of 1223445685 in words is "one billion, two hundred twenty-three million, four hundred forty-five thousand, six hundred eighty-five".