1223955568 has 20 divisors (see below), whose sum is σ = 2586997368. Its totient is φ = 556343360.

The previous prime is 1223955541. The next prime is 1223955587. The reversal of 1223955568 is 8655593221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3476971 + ... + 3477322.

Almost surely, 2^1223955568 is an apocalyptic number.

It is an amenable number.

1223955568 is an abundant number, since it is smaller than the sum of its proper divisors (1363041800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1223955568 is a wasteful number, since it uses less digits than its factorization.

1223955568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6954312 (or 6954306 counting only the distinct ones).

The product of its digits is 648000, while the sum is 46.

The square root of 1223955568 is about 34985.0763612144. The cubic root of 1223955568 is about 1069.6833045336.

The spelling of 1223955568 in words is "one billion, two hundred twenty-three million, nine hundred fifty-five thousand, five hundred sixty-eight".