223738627661 has 8 divisors (see below), whose sum is σ = 224181939384. Its totient is φ = 223295610880.

The previous prime is 223738627649. The next prime is 223738627663. The reversal of 223738627661 is 166726837322.

It is a happy number.

223738627661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 79865586025 + 143873041636 = 282605^2 + 379306^2 .

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-223738627661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223738627663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1477091 + ... + 1621503.

It is an arithmetic number, because the mean of its divisors is an integer number (28022742423).

Almost surely, 2^223738627661 is an apocalyptic number.

It is an amenable number.

223738627661 is a deficient number, since it is larger than the sum of its proper divisors (443311723).

223738627661 is a wasteful number, since it uses less digits than its factorization.

223738627661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147471.

The product of its digits is 6096384, while the sum is 53.

The spelling of 223738627661 in words is "two hundred twenty-three billion, seven hundred thirty-eight million, six hundred twenty-seven thousand, six hundred sixty-one".