7285813 has 2 divisors, whose sum is σ = 7285814. Its totient is φ = 7285812.

The previous prime is 7285787. The next prime is 7285819. The reversal of 7285813 is 3185827.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5373124 + 1912689 = 2318^2 + 1383^2 .

It is a cyclic number.

It is not a de Polignac number, because 7285813 - 2²¹ = 5188661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7285819) 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 as a sum of consecutive naturals, namely, 3642906 + 3642907.

It is an arithmetic number, because the mean of its divisors is an integer number (3642907).

Almost surely, 2^7285813 is an apocalyptic number.

It is an amenable number.

7285813 is a deficient number, since it is larger than the sum of its proper divisors (1).

7285813 is an equidigital number, since it uses as much as digits as its factorization.

7285813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13440, while the sum is 34.

The square root of 7285813 is about 2699.2245182645. The cubic root of 7285813 is about 193.8619931087.

The spelling of 7285813 in words is "seven million, two hundred eighty-five thousand, eight hundred thirteen".