223240564 has 6 divisors (see below), whose sum is σ = 390670994. Its totient is φ = 111620280.

The previous prime is 223240489. The next prime is 223240571. The reversal of 223240564 is 465042322.

223240564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 203062500 + 20178064 = 14250^2 + 4492^2 .

It is a super-3 number, since 3×223240564³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27905067 + ... + 27905074.

Almost surely, 2^223240564 is an apocalyptic number.

It is an amenable number.

223240564 is a deficient number, since it is larger than the sum of its proper divisors (167430430).

223240564 is a wasteful number, since it uses less digits than its factorization.

223240564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55810145 (or 55810143 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 223240564 is about 14941.2370304470. The cubic root of 223240564 is about 606.6306794792.

Adding to 223240564 its reverse (465042322), we get a palindrome (688282886).

The spelling of 223240564 in words is "two hundred twenty-three million, two hundred forty thousand, five hundred sixty-four".