7085520 has 120 divisors (see below), whose sum is σ = 25659816. Its totient is φ = 1741824.

The previous prime is 7085509. The next prime is 7085521. The reversal of 7085520 is 255807.

7085520 = T₂₁₄ + T₂₁₅ + ... + T₃₇₃.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 242064 + 6843456 = 492^2 + 2616^2 .

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7085521) 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 23 ways as a sum of consecutive naturals, for example, 8982 + ... + 9738.

Almost surely, 2^7085520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7085520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12829908).

7085520 is an abundant number, since it is smaller than the sum of its proper divisors (18574296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7085520 is a wasteful number, since it uses less digits than its factorization.

7085520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 789 (or 780 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 7085520 is about 2661.8640085474. The cubic root of 7085520 is about 192.0689856272.

The spelling of 7085520 in words is "seven million, eighty-five thousand, five hundred twenty".