8650221 has 8 divisors (see below), whose sum is σ = 11815104. Its totient is φ = 5626080.

The previous prime is 8650219. The next prime is 8650223. The reversal of 8650221 is 1220568.

It is an interprime number because it is at equal distance from previous prime (8650219) and next prime (8650223).

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

It is not a de Polignac number, because 8650221 - 2¹ = 8650219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8650191 and 8650200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8650223) 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, 35041 + ... + 35286.

It is an arithmetic number, because the mean of its divisors is an integer number (1476888).

Almost surely, 2^8650221 is an apocalyptic number.

It is an amenable number.

8650221 is a deficient number, since it is larger than the sum of its proper divisors (3164883).

8650221 is a wasteful number, since it uses less digits than its factorization.

8650221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70371.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 8650221 is about 2941.1258048577. The cubic root of 8650221 is about 205.2779968268.

Adding to 8650221 its reverse (1220568), we get a palindrome (9870789).

The spelling of 8650221 in words is "eight million, six hundred fifty thousand, two hundred twenty-one".