223020656 has 40 divisors (see below), whose sum is σ = 441694944. Its totient is φ = 109061120.

The previous prime is 223020653. The next prime is 223020683. The reversal of 223020656 is 656020322.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223020653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154916 + ... + 156348.

Almost surely, 2^223020656 is an apocalyptic number.

It is an amenable number.

223020656 is a deficient number, since it is larger than the sum of its proper divisors (218674288).

223020656 is a wasteful number, since it uses less digits than its factorization.

223020656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1649 (or 1643 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 223020656 is about 14933.8761210879. The cubic root of 223020656 is about 606.4314224312.

Adding to 223020656 its reverse (656020322), we get a palindrome (879040978).

The spelling of 223020656 in words is "two hundred twenty-three million, twenty thousand, six hundred fifty-six".