7226397 has 6 divisors (see below), whose sum is σ = 10438142. Its totient is φ = 4817592.

The previous prime is 7226381. The next prime is 7226431. The reversal of 7226397 is 7936227.

It can be written as a sum of positive squares in only one way, i.e., 6859161 + 367236 = 2619^2 + 606^2 .

It is not a de Polignac number, because 7226397 - 2⁴ = 7226381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7226357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 401458 + ... + 401475.

Almost surely, 2^7226397 is an apocalyptic number.

It is an amenable number.

7226397 is a deficient number, since it is larger than the sum of its proper divisors (3211745).

7226397 is a wasteful number, since it uses less digits than its factorization.

7226397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802939 (or 802936 counting only the distinct ones).

The product of its digits is 31752, while the sum is 36.

The square root of 7226397 is about 2688.1958633998. The cubic root of 7226397 is about 193.3335708149. Note that the first 3 decimals are identical.

The spelling of 7226397 in words is "seven million, two hundred twenty-six thousand, three hundred ninety-seven".