720715386 has 16 divisors (see below), whose sum is σ = 1441704384. Its totient is φ = 240192864.

The previous prime is 720715381. The next prime is 720715403. The reversal of 720715386 is 683517027.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (720715381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42310 + ... + 56846.

It is an arithmetic number, because the mean of its divisors is an integer number (90106524).

Almost surely, 2^720715386 is an apocalyptic number.

720715386 is an abundant number, since it is smaller than the sum of its proper divisors (720988998).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

720715386 is a wasteful number, since it uses less digits than its factorization.

720715386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22805.

The product of its (nonzero) digits is 70560, while the sum is 39.

The square root of 720715386 is about 26846.1428514414. The cubic root of 720715386 is about 896.5776968119.

The spelling of 720715386 in words is "seven hundred twenty million, seven hundred fifteen thousand, three hundred eighty-six".