223644641 has 8 divisors (see below), whose sum is σ = 245839968. Its totient is φ = 201760000.

The previous prime is 223644601. The next prime is 223644643. The reversal of 223644641 is 146446322.

223644641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223644641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 223644598 and 223644607.

It is not an unprimeable number, because it can be changed into a prime (223644643) 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, 76160 + ... + 79041.

It is an arithmetic number, because the mean of its divisors is an integer number (30729996).

Almost surely, 2^223644641 is an apocalyptic number.

It is an amenable number.

223644641 is a deficient number, since it is larger than the sum of its proper divisors (22195327).

223644641 is a wasteful number, since it uses less digits than its factorization.

223644641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155343.

The product of its digits is 27648, while the sum is 32.

The square root of 223644641 is about 14954.7531240071. The cubic root of 223644641 is about 606.9964698663.

The spelling of 223644641 in words is "two hundred twenty-three million, six hundred forty-four thousand, six hundred forty-one".