223640641 has 8 divisors (see below), whose sum is σ = 257935040. Its totient is φ = 189932688.

The previous prime is 223640633. The next prime is 223640657. The reversal of 223640641 is 146046322.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 223640641 - 2³ = 223640633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (223640611) by changing a digit.

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, 145791 + ... + 147316.

It is an arithmetic number, because the mean of its divisors is an integer number (32241880).

Almost surely, 2^223640641 is an apocalyptic number.

It is an amenable number.

223640641 is a deficient number, since it is larger than the sum of its proper divisors (34294399).

223640641 is a wasteful number, since it uses less digits than its factorization.

223640641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293223.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 223640641 is about 14954.6193866644. The cubic root of 223640641 is about 606.9928510295.

Adding to 223640641 its reverse (146046322), we get a palindrome (369686963).

The spelling of 223640641 in words is "two hundred twenty-three million, six hundred forty thousand, six hundred forty-one".