720563457 has 8 divisors (see below), whose sum is σ = 960928960. Its totient is φ = 480286800.

The previous prime is 720563453. The next prime is 720563483. The reversal of 720563457 is 754365027.

720563457 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 not a de Polignac number, because 720563457 - 2² = 720563453 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (720563453) 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, 157 + ... + 37962.

It is an arithmetic number, because the mean of its divisors is an integer number (120116120).

Almost surely, 2^720563457 is an apocalyptic number.

It is an amenable number.

720563457 is a deficient number, since it is larger than the sum of its proper divisors (240365503).

720563457 is a wasteful number, since it uses less digits than its factorization.

720563457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44423.

The product of its (nonzero) digits is 176400, while the sum is 39.

The square root of 720563457 is about 26843.3130779343. The cubic root of 720563457 is about 896.5146919475.

The spelling of 720563457 in words is "seven hundred twenty million, five hundred sixty-three thousand, four hundred fifty-seven".