721080213 has 8 divisors (see below), whose sum is σ = 1098788928. Its totient is φ = 412045824.

The previous prime is 721080209. The next prime is 721080221. The reversal of 721080213 is 312080127.

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

It is not a de Polignac number, because 721080213 - 2² = 721080209 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (721080253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17168556 + ... + 17168597.

It is an arithmetic number, because the mean of its divisors is an integer number (137348616).

Almost surely, 2^721080213 is an apocalyptic number.

It is an amenable number.

721080213 is a deficient number, since it is larger than the sum of its proper divisors (377708715).

721080213 is a wasteful number, since it uses less digits than its factorization.

721080213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34337163.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 721080213 is about 26852.9367667672. The cubic root of 721080213 is about 896.7289541974.

The spelling of 721080213 in words is "seven hundred twenty-one million, eighty thousand, two hundred thirteen".