7283681 has 4 divisors (see below), whose sum is σ = 7320852. Its totient is φ = 7246512.

The previous prime is 7283659. The next prime is 7283693. The reversal of 7283681 is 1863827.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1863827 = 7 ⋅266261.

It can be written as a sum of positive squares in 2 ways, for example, as 4752400 + 2531281 = 2180^2 + 1591^2 .

It is a cyclic number.

It is not a de Polignac number, because 7283681 - 2¹⁰ = 7282657 is a prime.

It is a super-2 number, since 2×7283681² = 106104017819522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7283651) 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 3 ways as a sum of consecutive naturals, for example, 18290 + ... + 18683.

It is an arithmetic number, because the mean of its divisors is an integer number (1830213).

Almost surely, 2^7283681 is an apocalyptic number.

It is an amenable number.

7283681 is a deficient number, since it is larger than the sum of its proper divisors (37171).

7283681 is a wasteful number, since it uses less digits than its factorization.

7283681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37170.

The product of its digits is 16128, while the sum is 35.

The square root of 7283681 is about 2698.8295611246. The cubic root of 7283681 is about 193.8430817398.

The spelling of 7283681 in words is "seven million, two hundred eighty-three thousand, six hundred eighty-one".