223781864 has 16 divisors (see below), whose sum is σ = 434060100. Its totient is φ = 108032512.

The previous prime is 223781843. The next prime is 223781869. The reversal of 223781864 is 468187322.

It can be written as a sum of positive squares in 2 ways, for example, as 220284964 + 3496900 = 14842^2 + 1870^2 .

It is not an unprimeable number, because it can be changed into a prime (223781869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 482057 + ... + 482520.

Almost surely, 2^223781864 is an apocalyptic number.

It is an amenable number.

223781864 is a deficient number, since it is larger than the sum of its proper divisors (210278236).

223781864 is a wasteful number, since it uses less digits than its factorization.

223781864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 964612 (or 964608 counting only the distinct ones).

The product of its digits is 129024, while the sum is 41.

The square root of 223781864 is about 14959.3403597886. The cubic root of 223781864 is about 607.1205906535.

It can be divided in two parts, 22378 and 1864, that added together give a palindrome (24242).

The spelling of 223781864 in words is "two hundred twenty-three million, seven hundred eighty-one thousand, eight hundred sixty-four".