720347651 has 8 divisors (see below), whose sum is σ = 744077184. Its totient is φ = 696648960.

The previous prime is 720347609. The next prime is 720347657. The reversal of 720347651 is 156743027.

720347651 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 720347651 - 2⁶ = 720347587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (720347657) 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, 45761 + ... + 59453.

It is an arithmetic number, because the mean of its divisors is an integer number (93009648).

Almost surely, 2^720347651 is an apocalyptic number.

720347651 is a deficient number, since it is larger than the sum of its proper divisors (23729533).

720347651 is a wasteful number, since it uses less digits than its factorization.

720347651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15421.

The product of its (nonzero) digits is 35280, while the sum is 35.

The square root of 720347651 is about 26839.2930421053. The cubic root of 720347651 is about 896.4251821036.

The spelling of 720347651 in words is "seven hundred twenty million, three hundred forty-seven thousand, six hundred fifty-one".