720451747 has 16 divisors (see below), whose sum is σ = 792576000. Its totient is φ = 651841344.

The previous prime is 720451717. The next prime is 720451757. The reversal of 720451747 is 747154027.

720451747 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-720451747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (720451717) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 558279 + ... + 559567.

It is an arithmetic number, because the mean of its divisors is an integer number (49536000).

Almost surely, 2^720451747 is an apocalyptic number.

720451747 is a deficient number, since it is larger than the sum of its proper divisors (72124253).

720451747 is a wasteful number, since it uses less digits than its factorization.

720451747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2610.

The product of its (nonzero) digits is 54880, while the sum is 37.

The square root of 720451747 is about 26841.2322183614. The cubic root of 720451747 is about 896.4683602279.

The spelling of 720451747 in words is "seven hundred twenty million, four hundred fifty-one thousand, seven hundred forty-seven".