7083721 has 8 divisors (see below), whose sum is σ = 7205760. Its totient is φ = 6962928.

The previous prime is 7083719. The next prime is 7083737. The reversal of 7083721 is 1273807.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7083721 - 2¹ = 7083719 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7083721.

It is not an unprimeable number, because it can be changed into a prime (7083121) 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 7 ways as a sum of consecutive naturals, for example, 25435 + ... + 25711.

It is an arithmetic number, because the mean of its divisors is an integer number (900720).

Almost surely, 2^7083721 is an apocalyptic number.

It is an amenable number.

7083721 is a deficient number, since it is larger than the sum of its proper divisors (122039).

7083721 is a wasteful number, since it uses less digits than its factorization.

7083721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 7083721 is about 2661.5260660005. The cubic root of 7083721 is about 192.0527289350.

The spelling of 7083721 in words is "seven million, eighty-three thousand, seven hundred twenty-one".