223452666 has 24 divisors (see below), whose sum is σ = 485687124. Its totient is φ = 74247360.

The previous prime is 223452661. The next prime is 223452667. The reversal of 223452666 is 666254322.

It can be written as a sum of positive squares in 2 ways, for example, as 204347025 + 19105641 = 14295^2 + 4371^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 223452666.

It is not an unprimeable number, because it can be changed into a prime (223452661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13875 + ... + 25286.

Almost surely, 2^223452666 is an apocalyptic number.

223452666 is an abundant number, since it is smaller than the sum of its proper divisors (262234458).

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

223452666 is a wasteful number, since it uses less digits than its factorization.

223452666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39486 (or 39483 counting only the distinct ones).

The product of its digits is 103680, while the sum is 36.

The square root of 223452666 is about 14948.3332181217. Note that the first 3 decimals coincide. The cubic root of 223452666 is about 606.8227396352.

The spelling of 223452666 in words is "two hundred twenty-three million, four hundred fifty-two thousand, six hundred sixty-six".