223065856 has 72 divisors (see below), whose sum is σ = 485155664. Its totient is φ = 101744640.

The previous prime is 223065841. The next prime is 223065877. The reversal of 223065856 is 658560322.

It is a happy number.

It is a super-2 number, since 2×223065856² = 99516752226025472, which contains 22 as substring.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 322471 + ... + 323161.

Almost surely, 2^223065856 is an apocalyptic number.

223065856 is a gapful number since it is divisible by the number (26) 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 223065856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242577832).

223065856 is an abundant number, since it is smaller than the sum of its proper divisors (262089808).

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

223065856 is an equidigital number, since it uses as much as digits as its factorization.

223065856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 817 (or 803 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

The square root of 223065856 is about 14935.3893822692. The cubic root of 223065856 is about 606.4723885151.

It can be divided in two parts, 2230 and 65856, that added together give a palindrome (68086).

The spelling of 223065856 in words is "two hundred twenty-three million, sixty-five thousand, eight hundred fifty-six".