721852673 has 8 divisors (see below), whose sum is σ = 727069056. Its totient is φ = 716655600.

The previous prime is 721852627. The next prime is 721852679. The reversal of 721852673 is 376258127.

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 721852673 - 2¹⁰ = 721851649 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 721852673.

It is not an unprimeable number, because it can be changed into a prime (721852679) 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, 74858 + ... + 83948.

It is an arithmetic number, because the mean of its divisors is an integer number (90883632).

Almost surely, 2^721852673 is an apocalyptic number.

It is an amenable number.

721852673 is a deficient number, since it is larger than the sum of its proper divisors (5216383).

721852673 is a wasteful number, since it uses less digits than its factorization.

721852673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9655.

The product of its digits is 141120, while the sum is 41.

The square root of 721852673 is about 26867.3160736237. The cubic root of 721852673 is about 897.0490480578.

The spelling of 721852673 in words is "seven hundred twenty-one million, eight hundred fifty-two thousand, six hundred seventy-three".