7328681 has 6 divisors (see below), whose sum is σ = 7472430. Its totient is φ = 7187648.

The previous prime is 7328669. The next prime is 7328693. The reversal of 7328681 is 1868237.

It is an interprime number because it is at equal distance from previous prime (7328669) and next prime (7328693).

It can be written as a sum of positive squares in 3 ways, for example, as 2418025 + 4910656 = 1555^2 + 2216^2 .

It is not a de Polignac number, because 7328681 - 2¹⁰ = 7327657 is a prime.

It is a super-2 number, since 2×7328681² = 107419130399522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7328621) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1505 + ... + 4113.

It is an arithmetic number, because the mean of its divisors is an integer number (1245405).

Almost surely, 2^7328681 is an apocalyptic number.

It is an amenable number.

7328681 is a deficient number, since it is larger than the sum of its proper divisors (143749).

7328681 is an equidigital number, since it uses as much as digits as its factorization.

7328681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2715 (or 2662 counting only the distinct ones).

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

The square root of 7328681 is about 2707.1536712939. The cubic root of 7328681 is about 194.2414625438.

The spelling of 7328681 in words is "seven million, three hundred twenty-eight thousand, six hundred eighty-one".