1223774568 has 80 divisors (see below), whose sum is σ = 3432985380. Its totient is φ = 407296512.

The previous prime is 1223774537. The next prime is 1223774603. The reversal of 1223774568 is 8654773221.

1223774568 is a `hidden beast` number, since 12 + 2 + 3 + 7 + 74 + 568 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1074397284 + 149377284 = 32778^2 + 12222^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 632130 + ... + 634062.

Almost surely, 2^1223774568 is an apocalyptic number.

1223774568 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1223774568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1716492690).

1223774568 is an abundant number, since it is smaller than the sum of its proper divisors (2209210812).

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

1223774568 is a wasteful number, since it uses less digits than its factorization.

1223774568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2928 (or 2915 counting only the distinct ones).

The product of its digits is 564480, while the sum is 45.

The square root of 1223774568 is about 34982.4894482940. The cubic root of 1223774568 is about 1069.6305732559.

The spelling of 1223774568 in words is "one billion, two hundred twenty-three million, seven hundred seventy-four thousand, five hundred sixty-eight".