7226618 has 24 divisors (see below), whose sum is σ = 12957012. Its totient is φ = 3011904.

The previous prime is 7226617. The next prime is 7226629. The reversal of 7226618 is 8166227.

It can be written as a sum of positive squares in 2 ways, for example, as 6385729 + 840889 = 2527^2 + 917^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7226617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2630 + ... + 4622.

Almost surely, 2^7226618 is an apocalyptic number.

7226618 is a deficient number, since it is larger than the sum of its proper divisors (5730394).

7226618 is a wasteful number, since it uses less digits than its factorization.

7226618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2046 (or 2039 counting only the distinct ones).

The product of its digits is 8064, while the sum is 32.

The square root of 7226618 is about 2688.2369687213. The cubic root of 7226618 is about 193.3355416580.

The spelling of 7226618 in words is "seven million, two hundred twenty-six thousand, six hundred eighteen".