7221633 has 4 divisors (see below), whose sum is σ = 9628848. Its totient is φ = 4814420.

The previous prime is 7221631. The next prime is 7221649. The reversal of 7221633 is 3361227.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 7221633 - 2¹ = 7221631 is a prime.

7221633 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (7221631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1203603 + ... + 1203608.

It is an arithmetic number, because the mean of its divisors is an integer number (2407212).

Almost surely, 2^7221633 is an apocalyptic number.

It is an amenable number.

7221633 is a deficient number, since it is larger than the sum of its proper divisors (2407215).

7221633 is a wasteful number, since it uses less digits than its factorization.

7221633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2407214.

The product of its digits is 1512, while the sum is 24.

The square root of 7221633 is about 2687.3096211639. The cubic root of 7221633 is about 193.2910764430.

The spelling of 7221633 in words is "seven million, two hundred twenty-one thousand, six hundred thirty-three".