8223581 has 8 divisors (see below), whose sum is σ = 8636544. Its totient is φ = 7815280.

The previous prime is 8223577. The next prime is 8223601. The reversal of 8223581 is 1853228.

8223581 is digitally balanced in base 3, 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 not a de Polignac number, because 8223581 - 2² = 8223577 is a prime.

It is a super-2 number, since 2×8223581² = 135254568927122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8223541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2771 + ... + 4911.

It is an arithmetic number, because the mean of its divisors is an integer number (1079568).

Almost surely, 2^8223581 is an apocalyptic number.

It is an amenable number.

8223581 is a deficient number, since it is larger than the sum of its proper divisors (412963).

8223581 is a wasteful number, since it uses less digits than its factorization.

8223581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2331.

The product of its digits is 3840, while the sum is 29.

The square root of 8223581 is about 2867.6786779554. The cubic root of 8223581 is about 201.8460824685.

The spelling of 8223581 in words is "eight million, two hundred twenty-three thousand, five hundred eighty-one".