720005397 has 8 divisors (see below), whose sum is σ = 961093056. Its totient is φ = 479460672.

The previous prime is 720005389. The next prime is 720005401. The reversal of 720005397 is 793500027.

720005397 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 720005397 - 2³ = 720005389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720005357) 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, 132628 + ... + 137949.

It is an arithmetic number, because the mean of its divisors is an integer number (120136632).

Almost surely, 2^720005397 is an apocalyptic number.

It is an amenable number.

720005397 is a deficient number, since it is larger than the sum of its proper divisors (241087659).

720005397 is a wasteful number, since it uses less digits than its factorization.

720005397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271467.

The product of its (nonzero) digits is 13230, while the sum is 33.

The square root of 720005397 is about 26832.9162969663. The cubic root of 720005397 is about 896.2831887634.

The spelling of 720005397 in words is "seven hundred twenty million, five thousand, three hundred ninety-seven".