7085221 has 8 divisors (see below), whose sum is σ = 8324064. Its totient is φ = 5945520.

The previous prime is 7085149. The next prime is 7085231. The reversal of 7085221 is 1225807.

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

It is a cyclic number.

It is not a de Polignac number, because 7085221 - 2¹⁷ = 6954149 is a prime.

It is a Duffinian number.

7085221 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7085231) 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 7 ways as a sum of consecutive naturals, for example, 24631 + ... + 24916.

It is an arithmetic number, because the mean of its divisors is an integer number (1040508).

Almost surely, 2^7085221 is an apocalyptic number.

It is an amenable number.

7085221 is a deficient number, since it is larger than the sum of its proper divisors (1238843).

7085221 is a wasteful number, since it uses less digits than its factorization.

7085221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49571.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 7085221 is about 2661.8078443043. The cubic root of 7085221 is about 192.0662838996.

It can be divided in two parts, 708 and 5221, that added together give a square (5929 = 77²).

The spelling of 7085221 in words is "seven million, eighty-five thousand, two hundred twenty-one".