7081329 has 4 divisors (see below), whose sum is σ = 9441776. Its totient is φ = 4720884.

The previous prime is 7081279. The next prime is 7081337. The reversal of 7081329 is 9231807.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 7081329 - 2⁷ = 7081201 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7081296 and 7081305.

It is not an unprimeable number, because it can be changed into a prime (7081339) 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 3 ways as a sum of consecutive naturals, for example, 1180219 + ... + 1180224.

It is an arithmetic number, because the mean of its divisors is an integer number (2360444).

Almost surely, 2^7081329 is an apocalyptic number.

It is an amenable number.

7081329 is a deficient number, since it is larger than the sum of its proper divisors (2360447).

7081329 is a wasteful number, since it uses less digits than its factorization.

7081329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2360446.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 7081329 is about 2661.0766618044. The cubic root of 7081329 is about 192.0311093255.

The spelling of 7081329 in words is "seven million, eighty-one thousand, three hundred twenty-nine".