7722213 has 4 divisors (see below), whose sum is σ = 10296288. Its totient is φ = 5148140.

The previous prime is 7722191. The next prime is 7722217. The reversal of 7722213 is 3122277.

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 7722213 - 2¹⁷ = 7591141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7722217) 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, 1287033 + ... + 1287038.

It is an arithmetic number, because the mean of its divisors is an integer number (2574072).

Almost surely, 2^7722213 is an apocalyptic number.

It is an amenable number.

7722213 is a deficient number, since it is larger than the sum of its proper divisors (2574075).

7722213 is a wasteful number, since it uses less digits than its factorization.

7722213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2574074.

The product of its digits is 1176, while the sum is 24.

The square root of 7722213 is about 2778.8870074186. The cubic root of 7722213 is about 197.6577855687.

The spelling of 7722213 in words is "seven million, seven hundred twenty-two thousand, two hundred thirteen".