720681001 has 8 divisors (see below), whose sum is σ = 784771200. Its totient is φ = 659206800.

The previous prime is 720680959. The next prime is 720681019. The reversal of 720681001 is 100186027.

720681001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 720681001 - 2¹³ = 720672809 is a prime.

It is a super-3 number, since 3×720681001³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (720681061) 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, 653425 + ... + 654526.

It is an arithmetic number, because the mean of its divisors is an integer number (98096400).

Almost surely, 2^720681001 is an apocalyptic number.

It is an amenable number.

720681001 is a deficient number, since it is larger than the sum of its proper divisors (64090199).

720681001 is a wasteful number, since it uses less digits than its factorization.

720681001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1307999.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 720681001 is about 26845.5024352311. The cubic root of 720681001 is about 896.5634381485.

The spelling of 720681001 in words is "seven hundred twenty million, six hundred eighty-one thousand, one".