721083 has 8 divisors (see below), whose sum is σ = 1048896. Its totient is φ = 437000.

The previous prime is 721079. The next prime is 721087. The reversal of 721083 is 380127.

It is an interprime number because it is at equal distance from previous prime (721079) and next prime (721087).

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 721083 - 2² = 721079 is a prime.

721083 is a lucky number.

It is a plaindrome in base 14.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 721083.

It is not an unprimeable number, because it can be changed into a prime (721087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10893 + ... + 10958.

It is an arithmetic number, because the mean of its divisors is an integer number (131112).

2⁷²¹⁰⁸³ is an apocalyptic number.

721083 is a deficient number, since it is larger than the sum of its proper divisors (327813).

721083 is a wasteful number, since it uses less digits than its factorization.

721083 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21865.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 721083 is about 849.1660614980. The cubic root of 721083 is about 89.6730109492.

The spelling of 721083 in words is "seven hundred twenty-one thousand, eighty-three".