7226785 has 8 divisors (see below), whose sum is σ = 9182376. Its totient is φ = 5441280.

The previous prime is 7226759. The next prime is 7226831. The reversal of 7226785 is 5876227.

It can be written as a sum of positive squares in 4 ways, for example, as 1096209 + 6130576 = 1047^2 + 2476^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7226785 - 2⁵ = 7226753 is a prime.

It is a Duffinian number.

7226785 is a lucky number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 42426 + ... + 42595.

It is an arithmetic number, because the mean of its divisors is an integer number (1147797).

Almost surely, 2^7226785 is an apocalyptic number.

It is an amenable number.

7226785 is a deficient number, since it is larger than the sum of its proper divisors (1955591).

7226785 is a wasteful number, since it uses less digits than its factorization.

7226785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85043.

The product of its digits is 47040, while the sum is 37.

The square root of 7226785 is about 2688.2680297917. The cubic root of 7226785 is about 193.3370309109.

The spelling of 7226785 in words is "seven million, two hundred twenty-six thousand, seven hundred eighty-five".