8221003 has 8 divisors (see below), whose sum is σ = 9434880. Its totient is φ = 7017000.

The previous prime is 8220937. The next prime is 8221009. The reversal of 8221003 is 3001228.

It is a happy number.

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 8221003 - 2¹³ = 8212811 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8221009) 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, 583 + ... + 4096.

It is an arithmetic number, because the mean of its divisors is an integer number (1179360).

Almost surely, 2^8221003 is an apocalyptic number.

8221003 is a deficient number, since it is larger than the sum of its proper divisors (1213877).

8221003 is a wasteful number, since it uses less digits than its factorization.

8221003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4937.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 8221003 is about 2867.2291502424. The cubic root of 8221003 is about 201.8249881065.

The spelling of 8221003 in words is "eight million, two hundred twenty-one thousand, three".