104223661 has 6 divisors (see below), whose sum is σ = 104764686. Its totient is φ = 103685400.

The previous prime is 104223631. The next prime is 104223689. The reversal of 104223661 is 166322401.

It can be written as a sum of positive squares in only one way, i.e., 94206436 + 10017225 = 9706^2 + 3165^2 .

It is not a de Polignac number, because 104223661 - 2⁹ = 104223149 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 (104223631) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 43351 + ... + 45691.

It is an arithmetic number, because the mean of its divisors is an integer number (17460781).

Almost surely, 2^104223661 is an apocalyptic number.

It is an amenable number.

104223661 is a deficient number, since it is larger than the sum of its proper divisors (541025).

104223661 is an frugal number, since it uses more digits than its factorization.

104223661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2763 (or 2552 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 104223661 is about 10208.9990204721. Note that the first 3 decimals coincide. The cubic root of 104223661 is about 470.6038127481.

The spelling of 104223661 in words is "one hundred four million, two hundred twenty-three thousand, six hundred sixty-one".