82223621 has 8 divisors (see below), whose sum is σ = 86644320. Its totient is φ = 77812272.

The previous prime is 82223599. The next prime is 82223651. The reversal of 82223621 is 12632228.

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 82223621 - 2¹⁰ = 82222597 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 (82223651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22691 + ... + 26063.

It is an arithmetic number, because the mean of its divisors is an integer number (10830540).

Almost surely, 2^82223621 is an apocalyptic number.

It is an amenable number.

82223621 is a deficient number, since it is larger than the sum of its proper divisors (4420699).

82223621 is a wasteful number, since it uses less digits than its factorization.

82223621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4675.

The product of its digits is 2304, while the sum is 26.

The square root of 82223621 is about 9067.7241356362. The cubic root of 82223621 is about 434.8427158505.

Adding to 82223621 its reverse (12632228), we get a palindrome (94855849).

The spelling of 82223621 in words is "eighty-two million, two hundred twenty-three thousand, six hundred twenty-one".