7223737 has 2 divisors, whose sum is σ = 7223738. Its totient is φ = 7223736.

The previous prime is 7223731. The next prime is 7223747. The reversal of 7223737 is 7373227.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7203856 + 19881 = 2684^2 + 141^2 .

It is an emirp because it is prime and its reverse (7373227) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7223737 - 2³ = 7223729 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7223699 and 7223708.

It is not a weakly prime, because it can be changed into another prime (7223731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3611868 + 3611869.

It is an arithmetic number, because the mean of its divisors is an integer number (3611869).

Almost surely, 2^7223737 is an apocalyptic number.

It is an amenable number.

7223737 is a deficient number, since it is larger than the sum of its proper divisors (1).

7223737 is an equidigital number, since it uses as much as digits as its factorization.

7223737 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12348, while the sum is 31.

The square root of 7223737 is about 2687.7010622463. The cubic root of 7223737 is about 193.3098462021.

The spelling of 7223737 in words is "seven million, two hundred twenty-three thousand, seven hundred thirty-seven".